Jesus - His Birth
Jesus – His Birth
- Two Gospels that include Jesus’ birth stories: Matthew and Luke.
- Matthew’s birth story: Joseph’s point of view.
- Luke’s birth story: Mary’s point of view.
- Visitors in Matthew’s Gospel: The wise men (Magi).
- Visitors in Luke’s Gospel: The shepherds.
- Dangerous event in Matthew’s Gospel: Herod tries to kill Jesus.
- Holy Family escape in Matthew’s Gospel: Egypt.
- Setting showing Jesus' humble birth in Luke’s Gospel: A manger.
- Gospel including the angel Gabriel speaking to Mary: Luke.
- Gospel focusing on Jesus as the Jewish Messiah: Matthew.
- Gospel emphasising peace and humility: Luke.
- Do the two birth stories contradict each other? No, but they focus on different things.
- “Harmonisation”: Combining both stories into one timeline.
- Example of harmonisation: The shepherds (Luke) came first, then the wise men (Matthew).
- “Redaction criticism”: Studying how Gospel writers shaped their stories to fit their message.
- Matthew highlights about Jesus: He is the fulfilment of Jewish prophecy.
- Luke highlights about Jesus: He came for the poor and humble.
- “Incarnation”: God becoming human in Jesus.
- “Substantial Presence”: Jesus is fully God and fully human from birth.
- Divine signs showing Jesus is God in the birth stories: Angels, prophecies, and the name Emmanuel (“God with us”).
- “Kenotic” meaning: Comes from a Greek word meaning “self-emptying”.
- Kenotic Model teaching: Jesus gave up divine power to become human.
- Bible passage supporting the Kenotic Model: Philippians 2:6–8.
- Jesus’ birth in a manger reflects the Kenotic Model: It shows God chose humility and limitation out of love.
- Why are the birth stories important to Christians? They show Jesus is both truly God and truly human.
Jesus – His Resurrection
- Rudolf Bultmann: A German theologian who believed the resurrection was symbolic, not historical.
- Bultmann on the resurrection: It wasn’t a literal event but a spiritual truth about faith.
- Bultmann's “demythologise”: Removing supernatural elements from the Bible to focus on its deeper message.
- Main message of the resurrection according to Bultmann: New life, forgiveness, and transformation.
- N.T. Wright: A British scholar who believes Jesus physically rose from the dead.
- N.T. Wright on the resurrection: It really happened in history with a real, physical body.
- Evidence Wright uses to support the resurrection: The Gospels and letters like 1 Corinthians 15.
- Wright believes the resurrection proves: Jesus defeated death and gives Christians hope for their own resurrection.
- Resurrection teaches Christians about death: Death is not the end—Jesus overcame it.
- Matthew 10:28 says about the soul: The soul cannot be killed, even if the body dies.
- 1 Corinthians 15 says about the body: The body is like a seed—dying and rising new and transformed.
- Kind of body Christians will have after death: A new, spiritual body.
- Philippians 1:21–24 says about death: “To live is Christ, to die is gain”—being with Christ is better.
- Paul feels about life and death: He wants to help others but believes being with Christ after death is better.
- John 20–21 after Jesus rises: Jesus appears physically—he eats, speaks, and is touched.
- Why is Jesus appearing physically important? It shows resurrected life is real and not just spiritual.
- Bultmann focus on in his view of resurrection: Faith in Jesus and the message of transformation, not proof.
- Wright focus on in his view of resurrection: Historical truth and the future hope of physical resurrection.
- Why is the resurrection central to Christian belief? It shows Jesus’ victory over death and the promise of eternal life.
- Resurrection says about God’s power: That God can conquer death and give new life.
- Difference between soul and body in Christian belief: The soul lives on after death, and the body is transformed at resurrection.
- Why is 1 Corinthians 15 important? It explains resurrection and the nature of the resurrected body.
- How does resurrection bring hope to Christians? It promises life after death and reunion with God.
- “To live is Christ, to die is gain” mean? Living serves others, but dying brings the reward of being with Jesus.
- How does resurrection affect daily Christian life? It inspires hope and motivates faithful living.
The Bible as a Source of Wisdom and Authority
- Christians believe the Bible is more than: A book of old stories—it is a guide for life.
- Why is the Bible called a source of wisdom and authority? Because it gives advice, meaning, comfort, and direction.
- How does the Bible help with moral advice? It teaches what is right and wrong.
- Ecclesiastes 12:13–14 teaches: Fear God and keep His commandments.
- “Fear God” means in Ecclesiastes: Respect God and live how He wants.
- Luke 6:36–37 teach: Be merciful, don’t judge, and forgive others.
- How does Luke 6 encourage Christians to behave? With kindness, fairness, and second chances.
- How is the Bible a guide to living? It gives practical advice for everyday life.
- Question is asked in Psalm 119:9–16: How can a young person stay on the right path?
- Answer in Psalm 119:9–16: By living according to God’s word.
- Image is used in Psalm 119:105–112: God’s word is like a lamp lighting the path.
- “A lamp for my feet” mean: God’s word shows the right direction in life.
- What does the Bible teach about the purpose of life? That life has spiritual and personal meaning.
- Genesis 1:26–28 say about humans: They are made in God’s image and told to care for the Earth.
- Being made in God's image mean: Humans have value, purpose, and responsibility.
- Ecclesiastes 9:5–9 teach: Life is short, so enjoy it and love others.
- How does Ecclesiastes encourage Christians to live? By appreciating life and building relationships.
- Bible’s spiritual purpose for life: To serve God.
- Bible’s personal purpose for life: To enjoy life and love others.
- How does the Bible give comfort and encouragement? It offers hope and reassurance in hard times.
- Psalm 46:1–3 teach: God is our refuge and strength, so don’t be afraid.
- Matthew 6:25 say: Don’t worry about your life—trust in God.
- Psalm 46 help Christians feel: Safe, supported, and unafraid.
- Jesus’ teaching in Matthew 6 offer: Comfort, reminding Christians that God cares.
- How do Christians use the Bible in daily life? For moral guidance, life direction, meaning, and comfort.
The Nature of God – Religious Concepts
- Is God male or female? God is neither—God is spirit (John 4:24), not biologically male or female.
- Why is God often called “Father” in Christianity? It reflects love, closeness, and protection, as Jesus used this term in prayer.
- What can be a problem with using only male language for God? It might make people think God is only male and can exclude women.
- How can calling God “Father” be helpful? It gives comfort and shows a loving, caring relationship with believers.
- Why might the “Father” image of God be difficult for some? Not everyone has a good father figure, so the image can feel painful or limiting.
- Who is Sallie McFague? A feminist theologian who suggested using new metaphors for God.
- What metaphor did Sallie McFague propose for God? “God as Mother”—to show nurture, compassion, and life-giving love.
- Did McFague say God is literally a mother? No—she said using this image helps people relate to God differently.
- What is the main idea behind McFague’s view? We need many ways of speaking about God—not just male images.
- What does “impassible” mean? It means God cannot suffer or be affected by emotions.
- Why do traditional theologians say God is impassible? Because God is perfect and unchanging—suffering would mean imperfection.
- What is the modern view of a suffering God? A loving God must be able to feel pain, grief, and sorrow.
- Why do some say God must suffer? Because God deeply cares for the world and its people.
- Who is Jürgen Moltmann? A theologian who wrote “The Crucified God” and said God suffers.
- What does Moltmann say about Jesus’ death? When Jesus died, God the Father also suffered the pain of that loss.
- What does Moltmann’s view show about God? That God is not distant but suffers with humanity.
- Why is a suffering God comforting? Because it means God understands human pain and shares in it.
- What does John 4:24 say about God? God is spirit—not limited by gender or human form.
- What does the use of “Father” show in Christian belief? Protection, authority, and a personal relationship with God.
- How might gendered language about God affect believers? It can make women feel less included in the faith.
- What’s the benefit of new metaphors for God like “Mother”? They offer fresh ways to connect with God emotionally and spiritually.
- Why do traditional views avoid saying God can suffer? Because it seems to limit God’s perfection and power.
- What is “The Crucified God”? A book by Moltmann explaining how God suffers with humanity.
- What does a suffering God reveal about divine love? That God shares in our pain out of love and compassion.
- What is the overall message of modern views about God’s nature? That God is loving, relatable, and deeply connected to human experience.
The Trinity
- What is the Trinity? One God in three Persons: Father, Son, and Holy Spirit.
- Who is God the Father? The Creator—one Person of the Trinity.
- Who is God the Son? Jesus Christ—God who became human.
- Who is God the Holy Spirit? God’s presence and power in the world today.
- Are the three Persons of the Trinity all fully God? Yes—all are fully God, but there is only one God.
- Why is the Trinity important to Christians? It helps explain how Jesus is divine and how He relates to the Father and the Spirit.
- What does the Trinity help explain about Jesus? That He is God, not just a human or prophet.
- What does “pre-existence” mean in relation to Jesus? Jesus existed before he was born on earth.
- What Bible verse supports Jesus’ pre-existence? John 1:1 – “In the beginning was the Word… and the Word was God.”
- What does “the Word” in John 1:1 refer to? Jesus—showing He was with God from the start.
- What does “co-equal” mean in relation to Jesus and the Father? Jesus is just as divine and powerful as God the Father.
- What does “co-eternal” mean? Jesus has always existed and was not created.
- Why did Jesus pray to the Father? To show the relationship between the Persons of the Trinity.
- How can Jesus be both God and the Son of God? Through the Trinity—He is one Person of the one God.
- Who is the third Person of the Trinity? The Holy Spirit.
- What does the Holy Spirit do today? Acts in the world as God’s power and presence.
- What does “Filioque” mean? “And the Son” in Latin.
- What was the original belief about where the Holy Spirit came from? That the Spirit proceeds from the Father.
- What change did Western Christians make? They added “and the Son” to say the Spirit comes from both.
- Why did Eastern Orthodox Christians disagree with the Filioque? They believe the Spirit comes only from the Father to protect the Father’s unique role.
- What was the result of the Filioque disagreement? It contributed to the Great Schism of 1054 between Eastern and Western Churches.
- What is the Great Schism? The split between Eastern Orthodox and Western (Catholic) Churches in 1054.
- Why is the Filioque important theologically? It affects how Christians understand the relationships within the Trinity.
- What do Catholic and most Protestant churches say about the Holy Spirit? That the Spirit comes from the Father and the Son.
- What do Eastern Orthodox churches believe about the Spirit? That the Spirit comes only from the Father.
The Atonement
- What does "atonement" mean? Making things right again between God and humans.
- What do Christians believe Jesus’ death did? It dealt with sin and restored the relationship between God and people.
- How many main theories of atonement are there? Three: Christus Victor, Substitution, and Moral Example.
- What is the "Christus Victor" theory? Jesus’ death defeated evil powers like sin, death, and the devil.
- What image does Christus Victor use to explain atonement? A battle—Jesus wins and sets people free.
- What is the "Substitution" theory of atonement? Jesus took our place and punishment so we could be forgiven.
- What are the two parts of the Substitution theory? Penal Substitution and Divine Sacrifice.
- What is Penal Substitution? Jesus took the punishment we deserved for our sins.
- Why is Jesus the perfect substitute? Because he is both fully human and fully divine.
- What is the Divine Sacrifice idea? Only Jesus, being perfect, could offer the true sacrifice for sin.
- What is the "Moral Example" theory of atonement? Jesus’ life and death show us how to love, serve, and obey.
- How does Jesus help people in the Moral Example theory? He inspires people to live better lives by following his example.
- Are the three atonement theories competing? No—many Christians accept elements of all three.
- Why is atonement needed in Christianity? Because sin separates humans from God.
- What does sin do, according to Christian belief? It breaks the relationship between people and God.
- How does Jesus’ death fix the problem of sin? It restores the broken relationship between humans and God.
- What is meant by God's “wrath”? God’s justice—He must punish sin.
- What is meant by God's “love”? God’s desire to forgive and save people.
- What tension do the atonement theories try to resolve? How God can be both just (punishing sin) and loving (offering forgiveness).
- What is the cross seen as in Christian belief? The place where God’s justice and love meet.
- What does Christus Victor teach about evil? That Jesus overcame it through his death and resurrection.
- What role does forgiveness play in Substitution theory? Jesus dies so we can be forgiven and not face the punishment ourselves.
- What is the main message of the Moral Example theory? Jesus saves us and teaches us how to live rightly.
- Why must Jesus be divine in the atonement? Because only a perfect being could truly overcome sin.
- How do the atonement theories help Christians today? They explain why Jesus died and how believers can be close to God.
Faith and Works (Justification)
- What is "justification" in Christianity? Being made right with God—how people are saved and enter a right relationship with Him.
- What is the big question about justification? Are we saved by faith alone, or do we need to do good works too?
- Who was Martin Luther? A Christian reformer in the 1500s who taught justification by faith alone.
- What did Luther believe about salvation? People are saved by faith in Jesus, not by doing good deeds.
- What does "sola fide" mean? "Faith alone"—the idea that salvation comes only through faith.
- According to Luther, can people earn salvation? No—salvation is a free gift from God.
- What does Romans 1:17 say? “The righteous will live by faith.”
- What does Ephesians 2:8–9 teach? “By grace you have been saved… not by works.”
- How did Luther view James 2:24? He rejected it, calling James an “epistle of straw.”
- What did James 2:24 say that Luther didn’t like? “A person is justified by what he does and not by faith alone.”
- Did Luther believe good works are important? Yes, but only as a result of faith—not as a way to earn salvation.
- What was the Catholic Church’s response to Luther? The Council of Trent.
- When did the Council of Trent meet? 1545–1563.
- What did the Council of Trent teach about faith and works? Both are needed—faith is essential, but good works also matter.
- According to Catholic teaching, how is salvation received? By grace through faith, with cooperation through good actions.
- What is meant by “cooperating with grace”? Responding to God’s gift of salvation by living a good and faithful life.
- Who is E. P. Sanders? A modern scholar who studied Paul and Judaism.
- What did Sanders say about Luther’s view of Paul? He believed Luther misunderstood Paul’s message.
- What is "covenantal nomism"? The idea that God gives the covenant, and people respond with good works.
- According to Sanders, how did Jews view salvation? As a gift from God, with good works as a way of keeping the relationship.
- Did Sanders say Paul was against good works? No—he said Paul was showing that faith in Christ is now the way into the covenant.
- What is the Catholic view of justification? A process involving both faith and good works.
- What is the Protestant view of justification (Lutheran)? Justification is by faith alone, not by works.
- How do Catholics and Protestants differ on salvation? Protestants focus on faith alone; Catholics include faith and works together.
- What does the debate about faith and works teach Christians today? That living faithfully includes both belief in Christ and living out that faith through action.
- What is the "community of believers"? All the people who follow Jesus and live out their Christian faith together.
- Where do most Christians live out their faith today? In churches.
- Where does the idea of the Christian community come from? The New Testament, especially Acts 2:42–47.
- What does Acts 2:42 say about the early Christians? “They devoted themselves to the apostles’ teaching and to fellowship, to the breaking of bread and to prayer…”
- What did the early Christians do together? Prayed, shared meals, listened to teaching, helped the poor, and worshipped.
- Why did the first Christian community grow? People were impressed by their love, unity, and way of life.
- What is worship in a church? Praising God through prayer, singing, and sacraments.
- What are sacraments? Special signs of God’s grace like Baptism and Holy Communion.
- What is religious teaching in a church? Learning about the Bible, Jesus, and how to live as a Christian.
- How is religious teaching done today? Through sermons, Bible studies, Sunday school, and youth groups.
- What does "mission" mean in a church? Spreading the message of Jesus.
- What are some examples of mission? Evangelism, missionaries, and outreach.
- What is service and outreach? Helping people in need, like the poor, sick, or lonely.
- How do churches help the needy? Food banks, charities, shelters, and support.
- What does "fellowship" mean in Christianity? Spending time together in friendship and support.
- Why is fellowship important? It helps people feel accepted and encouraged.
- How does Acts 2:42–47 inspire churches today? It shows how the early church lived in unity, prayer, and service.
- What do all churches aim to do, based on Acts? Worship, teach, serve, share the gospel, and build community.
- What is one way churches teach children? Sunday school.
- What is Holy Communion? A sacrament where bread and wine are shared in memory of Jesus.
- What is the "breaking of bread"? Sharing the Eucharist or meals together as Christians.
- Why do churches support missionaries? To share the Christian faith with people who haven’t heard it.
- What are modern examples of church outreach? Homeless shelters, food banks, and counselling services.
- What does it mean to be a Christian in a community? Living out faith together, supporting each other, and helping others.
- What Bible verse shows the power of the early Church community? Acts 2:42–47.
Key Moral Principles in Christianity
- What are Christian moral principles based on? God's teachings in the Bible.
- What does “love of neighbour” mean? Treating others kindly and fairly.
- What does Leviticus 19:34 say about others? “Love them as yourself, for you were foreigners in Egypt.”
- What two commandments does Jesus say are most important in Luke 10:25–28? Love God and love your neighbour as yourself.
- Why is love of neighbour important? It is at the heart of Christian moral behaviour.
- What does “God’s love as a model” mean? Christians should act with love, mercy, and compassion like God.
- How is God described in Exodus 34:6–7? Compassionate, gracious, slow to anger, abounding in love.
- What does 1 John 4:19 say about love? “We love because God first loved us.”
- What does 1 John 4:20 say about love and truth? If someone says they love God but hate others, they are not truthful.
- What is “regard for truth”? The belief that Christians should always be honest and truthful.
- What does 1 Samuel 12:24 encourage? Serve God faithfully and truthfully.
- What does Ephesians 4:25–27 say about truth? “Speak truthfully to your neighbour.”
- Why is truthfulness important in Christianity? It builds trust, justice, and love.
- What is “conscience”? The inner sense of right and wrong that helps guide moral decisions.
- What does 2 Corinthians 1:12 say about conscience? Paul acted with a clear conscience and sincerity from God.
- According to 1 Timothy 1:5, what does a good conscience lead to? A life of love, faith, and purity.
- Why is conscience important for Christians? It helps make moral choices, especially in tough situations.
- What is “forgiveness” in Christianity? Letting go of anger and offering pardon, just like God forgives.
- What does Jesus teach in Matthew 6:14–15 about forgiveness? If you forgive others, God will forgive you.
- What does Colossians 3:12–13 say about forgiveness? “Forgive as the Lord forgave you.”
- What does forgiveness bring? Healing, peace, and unity.
- Why must Christians forgive others? Because God forgives them.
- Which Bible verses support the love of neighbour? Leviticus 19:34 and Luke 10:25–28.
- Which verses encourage being truthful? 1 Samuel 12:24 and Ephesians 4:25–27.
- How do moral principles reflect God’s character? They show love, truth, mercy, justice, and forgiveness—just like God.
Baptism – Christian Diversity
- What is baptism in Christianity? A ritual marking a person’s entry into the Church.
- Do all Christians agree on how and when to baptise? No, Christians have different views about infant and believer’s baptism.
- What is infant baptism? Baptising babies, usually shortly after birth.
- Which early Christian thinker supported infant baptism? Augustine.
- What is “original sin”? The sin passed down from Adam and Eve to all humans.
- Why did Augustine believe baptism was urgent? To wash away original sin and save the soul.
- What happens in baptism, according to Augustine? Sin is washed away and the person is saved.
- Who was Ulrich Zwingli? A reformer who supported infant baptism but for different reasons than Augustine.
- Did Zwingli think baptism saves you? No, he saw it as a sign, not a means of salvation.
- What did Zwingli compare baptism to? Circumcision in the Old Testament.
- Why did Zwingli support baptising babies? As a sign of being part of the Christian community.
- What did Zwingli believe about parents and faith? Christian parents should raise their children in the faith, beginning with baptism.
- What is believer’s baptism? Baptising someone when they are old enough to choose faith for themselves.
- Which Christians usually practise believer’s baptism? Baptists and similar evangelical groups.
- Who was Karl Barth? A modern theologian who supported believer’s baptism.
- What did Karl Barth say about baptism? It should follow personal faith and be a public act of commitment.
- Why did Barth reject infant baptism? He believed it should be a free and informed choice.
- Whose baptism does Barth use as an example? Jesus being baptised as an adult by John the Baptist.
- What makes baptism meaningful for Barth? A conscious decision and act of personal faith.
- What’s the main reason for baptism according to Augustine? Salvation from original sin.
- What’s the main reason for baptism according to Zwingli? Marking identity and belonging to God’s people.
- What’s the main reason for baptism according to Barth? Making a personal, informed commitment to Jesus.
- What do all views agree baptism does? Marks entry into the Christian community.
- What makes the views of Augustine and Barth different? Augustine says baptism saves; Barth says it follows personal faith.
- How does this diversity reflect Christian identity? It shows different understandings of salvation, faith, and community.
Diversity in the Eucharist
- What is the Eucharist also called? Holy Communion or the Lord’s Supper.
- What does the Eucharist commemorate? Jesus’ Last Supper and his sacrifice.
- What elements are used in the Eucharist? Bread and wine (or juice).
- What do Christians remember during the Eucharist? Jesus giving his body and blood to save humanity.
- Why is the Eucharist important for Christians? It connects them to Jesus, strengthens faith, and unites the community.
- What is transubstantiation? The bread and wine become the actual body and blood of Christ.
- Which denomination teaches transubstantiation? Roman Catholic Church.
- What words of Jesus support transubstantiation? “This is my body… this is my blood.”
- What is transignification? The meaning of the bread and wine changes—they become holy symbols.
- What is transfinalization? The purpose of the bread and wine changes—to help people feel closer to God.
- How are transignification and transfinalization different from transubstantiation? They focus on meaning or purpose, not a physical change.
- What is consubstantiation? Jesus is spiritually present with the bread and wine, which remain unchanged.
- Which Protestants may believe in consubstantiation? Some Lutherans.
- What is memorialism? The Eucharist is a symbolic act of remembering Jesus’ sacrifice.
- Do Baptists believe in the real presence of Jesus in the Eucharist? No, they follow memorialism.
- What words of Jesus support memorialism? “Do this in remembrance of me.”
- What do all Christian views on the Eucharist have in common? They see it as meaningful and spiritually important.
- Do all Christians believe Jesus is physically present in the Eucharist? No, only some (e.g. Catholics and some Protestants like Lutherans) do.
- How often do churches celebrate the Eucharist? Regularly—often weekly or more frequently.
- What happens during a Eucharist service? Bible readings, prayers, bread and wine are shared.
- How does the Eucharist build Christian identity? It unites believers and connects them to Jesus' sacrifice.
- What is the Catholic view on Jesus’ presence in the Eucharist? He is truly and physically present.
- What is a symbolic view of the Eucharist? Memorialism—bread and wine remind believers of Jesus’ death.
- What belief focuses on spiritual presence without physical change? Consubstantiation.
- Why do views on the Eucharist differ? Christians interpret Jesus' words and actions in different ways.
Diversity in Christian Festivals – Christmas & Easter
- What are the two major Christian festivals discussed? Christmas and Easter.
- What do both Eastern Orthodox and Western churches celebrate at Christmas? The incarnation—God becoming human in Jesus.
- What do both traditions focus on during Christmas? Jesus’ birth, Mary, and God entering the world.
- What is common in both Christmas celebrations? Special services, hymns, and traditions.
- When is Christmas celebrated in the Western Church? 25 December.
- When is Christmas celebrated in the Eastern Orthodox Church? 7 January (Julian calendar).
- What is Advent? A time of preparation before Christmas.
- How is Advent observed in the Eastern Orthodox Church? 40 days of fasting and spiritual preparation.
- How is Advent observed in the Western Church? A 4-week period focusing on hope, peace, joy, and love.
- What kind of Christmas services are held in the Eastern Orthodox Church? Midnight Liturgy with many scripture readings and symbolism.
- What kind of Christmas services are held in Western Churches? Midnight Mass or Christmas Day services with carols.
- What is the key difference in Christmas celebrations between East and West? The date and length of Advent, with Orthodox fasting more.
- What does Easter celebrate? Jesus’ resurrection from the dead.
- What belief about Easter do both traditions share? That Jesus rose from the dead on the third day.
- How important is Easter in both traditions? It is the most important Christian festival.
- What are common Easter elements in both traditions? Special services, processions, and joyful celebrations.
- Why do Easter dates differ between East and West? They use different calendars (Julian vs. Gregorian).
- When does Easter usually fall in the Western Church? In March or April.
- What is unique about Orthodox Easter services? They are longer, symbolic, and include the Paschal greeting.
- What is the Paschal greeting in Orthodox Easter? “Christ is risen!” / “He is risen indeed!”
- What are some Western Easter traditions? Easter Vigil, sunrise services, and joyful hymns.
- Do all Orthodox churches celebrate the same way? No, there is some variation in customs and languages.
- Is there diversity within Western Easter practices too? Yes, especially in how Lent and Holy Week are observed.
- What is one key difference in Easter practices? The Orthodox Church uses older traditions and rituals.
- What is the main reason for festival differences? Use of different calendars and traditions developed over time.