Then he set up an altar for Baal in the temple of Baal, which he had built in Samaria.
1 Kings 16:32
Surrounding context
16:31 And 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.
16:32 Then he set up an altar for Baal in the temple of Baal, which he had built in Samaria.
16:33 And Ahab made a wooden image. Ahab did more to provoke the LORD God of Israel to anger than all the kings of Israel who were before him.