Mark 6:18
For John had said unto Herod, It is not lawful for you to have your brother's wife.
ā The Restored Word Bible
Context
16 But when Herod heard , he said, It is John, whom I beheaded: he is risen from the dead.
17 For Herod himself had sent forth and laid hold upon John, and bound him in prison for Herodias' sake, his brother Philip's wife: for he had married her.
18 For John had said unto Herod, It is not lawful for you to have your brother's wife.
19 Therefore Herodias had a quarrel against him, and would have killed him; but she could not:
20 For Herod feared John, knowing that he was a just man and an holy, and observed him; and when he heard him, he did many things, and heard him gladly.