[Sam]

part of being a good Roman citizen was to pledge allegiance to the emperor and the empire by offering a pinch of incense on an altar and saying "Caesar is Lord." Christians believed there was only one Lord who was Jesus the Christ and to them offering incense was like praying to another Lord. Today, Jehovah's Witnesses consider the Pledge of Allegiance to be the same thing.

Also, Christians/Jews did not believe all religions were equal. They believed that only one God was the true God.

It was rumored that they were cannibals because they talked about eating the flesh and drinking the blood of their God.