Mark 6:17-20

For Herod had John arrested and thrown into prison for repeatedly rebuking him in public, saying, “You have no right to marry Herodias, the wife of your brother Philip! You are violating the law of God!” This infuriated Herodias, and she held a bitter grudge against him and wanted John executed. But Herod both feared and stood in awe of John and kept him safely in custody, because he was convinced that he was a righteous and holy man. Every time Herod heard John speak, it disturbed his soul, but he was drawn to him and was intrigued by his words.