2 Chronicles 33:12-13

12This gave Manasseh a lot of pain. He asked the Lord his God to be kind to him. He made himself humble and he prayed for help to the Lord, the God of his ancestors.

13When Manasseh prayed to the Lord, the Lord answered him. He was kind to Manasseh, as Manasseh had asked him to be. So the Lord brought Manasseh back to Jerusalem again, to rule there as king. Then Manasseh knew that the Lord is the true God.