1 Kings 16:30-32

30Now Ahab the son of Omri did evil in the sight of the Lord, more than all who were before him.

31And it came to pass, as though it had been a trivial thing for him to walk in the sins of Jeroboam the son of Nebat, that he took as wife Jezebel the daughter of Ethbaal, king of the Sidonians; and he went and served Baal and worshiped him.

32Then he set up an altar for Baal in the temple of Baal, which he had built in Samaria.