2 Chronicles 33:12-16

12And when he was in distress, he entreated the favor of the Lord his God and humbled himself greatly before the God of his fathers.

13He prayed to him, and God was moved by his entreaty and heard his plea and brought him again to Jerusalem into his kingdom. Then Manasseh knew that the Lord was God.

14Afterward he built an outer wall for the city of David west of Gihon, in the valley, and for the entrance into the Fish Gate, and carried it around Ophel, and raised it to a very great height. He also put commanders of the army in all the fortified cities in Judah.

15And he took away the foreign gods and the idol from the house of the Lord, and all the altars that he had built on the mountain of the house of the Lord and in Jerusalem, and he threw them outside of the city.

16He also restored the altar of the Lord and offered on it sacrifices of peace offerings and of thanksgiving, and he commanded Judah to serve the Lord, the God of Israel.