John 3:24
Now John had not yet been thrown into prison.
Matthew 4:12
Now when Jesus heard that John had been arrested, He left [the province of Judea] and went to Galilee.
Matthew 14:3
For Herod had arrested John and had him chained and put in prison in order to please Herodias, his brother Philip's wife.
Mark 6:17
For it was Herod himself who had sent for John and had him arrested and chained up in prison. He did this to please Herodias, who was [i.e., had been] his brother Philip's wife, but whom Herod had married.
Luke 3:19-20
But because he had rebuked Herod, the tetrarch, for [marrying] his brother's wife Herodias, and for all the other bad things he had done,
Luke 9:7-9
Now when King Herod, the tetrarch [i.e., governor of that district] heard about all that was happening [concerning Jesus], he was perplexed because some people were saying that John [the Immerser] had risen from the dead;