This Bible contradiction is from the Skeptic's Annotated Bible.
Mark 1:21, 29 View context
And they went into Capernaum; and straightway on the sabbath day he entered into the synagogue, and taught. . . . And forthwith, when they were come out of the synagogue, they entered into the house of Simon and Andrew, with James and John.
John 1:44 View context
Now Philip was of Bethsaida, the city of Andrew and Peter.