RKJNT(i)
18 For John had said to Herod, It is not lawful for you to have your brother's wife.
19 Therefore Herodias had a grudge against him, and would have killed him; but she could not:
20 For Herod feared John, knowing that he was a just and holy man, and kept him safe; and when he heard him, he was perplexed, but he enjoyed listening to him.