This Bible contradiction is from the EvilBible.com.
John was in prison
Mark 1:14 View context
Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God,
John was not in prison
John 1:43 View context
The day following Jesus would go forth into Galilee, and findeth Philip, and saith unto him, Follow me.
John 3:22-24 View context
After these things came Jesus and his disciples into the land of Judaea; and there he tarried with them, and baptized.
And John also was baptizing in Aenon near to Salim, because there was much water there: and they came, and were baptized.
For John was not yet cast into prison.