2 Chronicles 33:12-15

12And when he was in distress, he besought the LORD his God, and humbled himself greatly before the God of his fathers.

13And he prayed unto him; and he was entreated of him, and heard his supplication, and brought him again to Jerusalem into his kingdom. Then Manasseh knew that the LORD he was God.

14Now after this he built an outer wall to the city of David, on the west side of Gihon, in the valley, even to the entering in at the fish gate; and he compassed about Ophel, and raised it up a very great height: and he put valiant captains in all the fenced cities of Judah.

15And he took away the strange gods, and the idol out of the house of the LORD, and all the altars that he had built in the mount of the house of the LORD, and in Jerusalem, and cast them out of the city.