I wouldn't say christians compromised their religion because the formation of Christianity included adopting stories and practices from preexisting religions. Aspect of Jesus were taken from Mithras and other deities in nearby regions. Noah's ark and the flood is the same (with small differences) story throughout the world. The Sumerians 5k+ years ago had almost exactly the same story.

Yes they catered to pagans because nature worship was common throughout Europe. The new religion uses traditions of the existing people in order to get the people to practice the new religion. Almost all religions do this.

The Hebrew religion reformed is Christianity. Judaism came from Babylon and is Phariseeism today. Their bible is the Talmud which allows them to do much evil. The modern day Jews are not, and have never been, God's Israel people as proven by the bible, history and Jewish writings. As a people they are anti-Christ and enemies of God. By their own writings, 90% are of Khazar, Ashkenaz descent through Japheth. Esau is Edom, Genesis 36. "Edom is in modern Jewry", The Jewish Encyclopedia. 9% are of Edomite, Canaanite descent. These are the descendants of those who argued with Christ and saw to Christ's death. See what he told them in John 8 and 10. They admitted they were not Israelites. Blessing God's enemies brings punishment to us and they know about Balaam.