Matthew 14:4

Then his narrative proceeds thus: "For Herod had laid hold on John, and bound him, and put him in prison, for Herodias' sake, his brother Philip's wife. For John said unto him, It is not lawful for thee to have her. And when he would have put him to death, he feared the people, because they counted him as a prophet." And wherefore doth he not address his discourse at all to her, but to the man? Because it depended more on him. But see how inoffensive he makes his accusation, as relating a history rather than bringing a charge.

John aroused Herod by his moral admonitions, not by any formal accusation. He wanted to correct, not to suppress. Herod, however, preferred to suppress rather than be reconciled. To those who are held captive, the freedom of the one innocent of wrongdoing becomes hateful. Virtue is undesirable to those who are immoral; holiness is abhorrent to those who are impious; chastity is an enemy to those who are impure; integrity is a hardship for those who are corrupt; frugality runs counter to those who are self-indulgent; mercy is intolerable to those who are cruel, as is loving-kindness to those who are pitiless and justice to those who are unjust. The Evangelist indicates this when he says, "John said to him, 'It is not lawful for you to have the wife of your brother Philip.' " This is where John runs into trouble. He who admonishes those who are evil gives offense. He who repudiates wrongdoers runs into trouble. John was saying what was proper of the law, what was proper of justice, what was proper of salvation and what was proper certainly not of hatred but of love. And look at the reward he received from the ungodly for his loving concern!

(vv. 3, 4.) For Herod had arrested John, bound him, and put him in prison because of Herodias, his brother Philip's wife. Because John had said to him, 'It is not lawful for you to have her.' The ancient history tells us that Philip, the son of Herod the Great (under whom the Lord fled to Egypt), the brother of this Herod under whom Christ suffered, had married Herodias, the daughter of King Aretas; but later, due to some disputes arising against his son-in-law, he took his daughter back and gave her in marriage to Herod, his enemy and the former husband of Herodias. However, who this Philip is, the evangelist Luke explains more fully: In the fifteenth year of the reign of Tiberius Caesar, when Pontius Pilate was governor of Judea; and Herod was tetrarch of Galilee; and his brother Philip was tetrarch of the region of Ituraea and Trachonitis (Luke 3:1). Therefore, John the Baptist, who came in the spirit and power of Elijah, with the same authority that Elijah had rebuked Ahab and Jezebel (1 Kings 21), accused Herod and Herodias of having entered into an unlawful marriage and of not being allowed to marry his brother's wife while his brother was still alive. John preferred to risk his life before the king rather than be forgetful of God's commandments because of flattery.