generosity and goodwill

"This boy is Ignorance. This girl is Want. Beware them both ..."

might seem like a warning, it also emphasizes the Ghost's awareness of the social inequalities and the need for generosity and compassion, particularly towards the poor. 

"Its dark brown curls were long and free; free as its genial face, its sparkling eye, its open hand, its cheery voice, its unconstrained demeanour, and its joyful air."

paints a picture of the Ghost as a character who embodies cheerfulness, openness, and abundance

"Blessings on it, how the Ghost exulted! How it bared its breadth of breast, and opened its capacious palm, and floated on, outpouring, with a generous arm, its bright and harmless mirth on everything within its reach!"

describes the Ghost's enthusiastic and generous spirit, showing how he spreads joy and goodwill to all around him

"Come in, exclaimed the Ghost, come in and know me better."

the beginning of the stave, emphasizes the spirit's warm and welcoming nature, inviting Scrooge to learn more about the values of Christmas