When Did Christianity and Judaism Part Ways?

Discussion on the origins and relationship between Christianity and Judaism.
Important figures: Jesus, Paul, and Peter were all Jewish, raising questions about when Christianity diverged from Judaism.

Christianity originated as a Jewish sect during the first century.
Predominance of Jewish followers among Jesus' disciples and early Christians.
Exception noted for the book of Luke-Acts; all other New Testament texts are fundamentally Jewish.
Early followers aimed more at reforming Judaism rather than founding a new religion.

By the 2nd century, Roman writers began to reference a distinct group known as Christians.
Introduction of the Greek term "Christianismos," translated as Christianity.
Church Father Ignatius was the first to use the term "Christianismos" in opposition to "Judaismo" (Judaism).
- Remark by Ignatius: "If anyone should interpret Judaism to you, do not hear him; for it is better to hear Christianismos from a man who is circumcised than Judaismo from one who is uncircumcised."
Suggests Ignatius viewed Christianity and Judaism as separate concepts defined by orthodoxy and heresy.

Importance of Daniel Boyarin's work, Borderlines: The Partition of Judeo-Christianity, on early Christianity's identity.
Notion that the term "Christianismos" was established before a modern concept of religion existed.
Ancient Christians defined their identity differently than contemporary understandings.

For early Christians, the core issue was regarding inclusion—who belonged and who did not.
Emphasis on orthodoxy and heresy rather than ethnic or historical identity.
Early Christians questioned whether beliefs or practices defined their identities.
Religious identity linked more to practice than belief in antiquity.

Hypothetical example of a man from Antioch:
- Born into a Jewish family, participated in Jewish customs, but believes in Jesus as the Messiah.
- Identity as either Jewish or Christian is complicated—he may still be considered Jewish.
Real evidence suggests early Christians attended synagogues and adhered to Jewish customs, complicating the identity divide.

Historical references reveal that some Christians maintained interactions with Jewish communities long into later centuries.
Early Christian sources indicate participation in Jewish religious practices continued well into the 4th to 6th centuries.
Tensions exist, as church authorities like John Chrysostom criticized overlaps between Christians and Jews, while laws from the Theodosian Code attempted to prohibit such interactions.

Boyarin's term "partitioning" signifies the gradual distinction among various Jewish sects.
Early Christians formed distinct identities while still sharing practices with mainstream Judaism.
The separation was not evident in everyday life, where similarities persisted.
Ignatius' writings reflect an ideological shift towards defining Judaism and Christianity as fundamentally distinct.

The evolution of Christianity from Judaism was complex and contextually dependent rather than a singular event.
Parting occurred at different times and circumstances around the Mediterranean, not just a one-time split.
Recognition that while distinct religions exist today, the path to their separation was gradual and multifaceted.
Thankful acknowledgment of the audience for engagement and viewership.