2 Chronicles 33:12, 13, 19

In his distress he sought the favor of the LORD his God and humbled himself greatly before the God of his ancestors.

And when he prayed to him, the LORD was moved by his entreaty and listened to his plea; so he brought him back to Jerusalem and to his kingdom. Then Manasseh knew that the LORD is God.

His prayer and how God was moved by his entreaty, as well as all his sins and unfaithfulness, and the sites where he built high places and set up Asherah poles and idols before he humbled himself—all these are written in the records of the seers.