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. This insulting action brought war. Aretas invaded Antipas’ dominion and inflicted tremendous losses on him, to the extent that he was almost overthrown. Antipas was saved by an appeal to Rome that brought an order from the emperor for Aretas to be captured or killed.

Kills John the Baptizer. It was Herod Antipas’ adulterous relationship with Herodias that brought reproof from John the Baptizer. John could properly correct Antipas on this matter, for Antipas was nominally a Jew and professedly under the Law. Antipas put John into prison, desiring to kill him, but was afraid of the people, who believed John was a prophet. Nevertheless, at a celebration of Antipas’ birthday, Herodias’ daughter so pleased him that he made an oath to give her whatever she asked. Herodias instructed her daughter to ask for John’s head. Herod, though it was not pleasing to him, cravenly gave in to save face before those attending the celebration and because of his oath. (However, under the Law he would not be bound by an oath to perform an illegal act, such as murder.)​—Mt 14:3-12; Mr 6:17-29.