Antipas married the daughter of Aretas, king of Arabia, whose capital was at Petra. But on one of his trips to Rome, Antipas visited his half brother Herod Philip, the son of Herod the Great and Mariamne II (not Philip the tetrarch). While visiting, he became infatuated with Philip’s wife Herodias, who was ambitious for position. He took her back to Galilee and married her, divorcing Aretas’ daughter and sending her back to her home.

Kills John the Baptizer. It was Herod Antipas’ adulterous relationship with Herodias that brought reproof from John the Baptizer.