What interesting religious opinions does Teabing reveal to Sophie in this section?

Teabing tells Sophie about the history of Christianity and the Vatican. He says that Christianity, as practiced in the Roman Empire, was a blend of the pagan religion which worshiped the sun. He points to powerful symbols, such as the sun disks that became halos and that the act of communion was originally a pagan practice. Also, December 25th is the birthday of Osiris, Adonis and Dionysus, not Jesus. Even the holy day was changed from the Sabbath Saturday to the day of the sun, "Sunday." Teabing says that Christianity was expropriated in the interest of gaining power.