Mark 6:17-19

17For Herod himself had given orders to have John arrested, and he had him bound and put in prison. He did this because of Herodias, his brother Philip’s wife, whom he had married. 18For John had been saying to Herod, “It is not lawful for you to have your brother’s wife.” 19So Herodias nursed a grudge against John and wanted to kill him. But she was not able to,