1 Kings 16:30-32

30Ahab son of Omri did more evil in the eyes of the LORD than any of those before him. 31He not only considered it trivial to commit the sins of Jeroboam son of Nebat, but he also married Jezebel daughter of Ethbaal king of the Sidonians, and began to serve Baal and worship him. 32He set up an altar for Baal in the temple of Baal that he built in Samaria.