Christianity and its paganistic origin

Two seraphim were guarding the gate of Eden. They were believed to be Assyrian origin. We also find a similar one in Chinese Taoism shrines.

Magi who celebrated the birth of Jesus were said to be Zoroastrian priests.

According to several surveys, actual birthday of Jesus Christ was the same or close date to the date of his death. It's very confusing to celebrate his birth and death at the same date.

The birthday of the Zoroastrian supreme God of light Mithra was 25th of December so it's not completely unimaginable to speculate the worship of two religions merged at some point in history.

Christianity was from its origin paganistic itself. Paganistic from Judaism. It's so natural for Christian faith to tolerate more paganistic views judging from its paganistic origin.

Christianity & Crime

Recently we had many crimes that were committed by very faithful Christians.
So I got curious about the relation between Christianity and crime.

Hypothesis
No.1 His false belief he is sure to resurrect or ascend to heaven might have made him feel as if he can do whatever he wants including crimes.

No.2 He had to willingly embrace the moralistic teachings of Christianity to calm down his evil mind.

No.3 He might hide himself behind the Christian church or by wearing a mask of hypocrite to act freely in a wicked world.

Cross culture

Many people believe cross means Christianity. How come it came to be a symbol of Christianity?

Jesus was believed to be crucified on the cross, that is one reason. The fish mark was used to represent Christ, and cross might be the simplified form for fish or Christ. The first Greek letter for Christ is X as the abbreviation form Xmas suggests and X became the representation for Christianity. Cross had been used to represent Seraph, or angel, cross came to represent Christ after people started believing Christ became angel after resurrection.

In Japan there's very few church and many people here don't know the relationship of cross and Christianity. For almost all people here cross is just a decoration of some design. Probably I think cross was used to indicate an important target as a bull's eye, this could have meant simply an objective of life.