12 While he was in distress he entreated the favor of the Lord his God and humbled himself greatly before the God of his ancestors. 13 He prayed to him, and God received his entreaty, heard his plea, and restored him again to Jerusalem and to his kingdom. Then Manasseh knew that the Lord indeed was God. 14 Afterward he built an outer wall for the city of David west of Gihon, in the valley, reaching the entrance at the Fish Gate; he 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. 15 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 out of the city. 16 He also restored the altar of the Lord and offered on it sacrifices of well-being and of thanksgiving; and he commanded Judah to serve the Lord the God of Israel. 17 The people, however, still sacrificed at the high places, but only to the Lord their God. 18 Now the rest of the acts of Manasseh, his prayer to his God, and the words of the seers who spoke to him in the name of the Lord God of Israel, these are in the Annals of the Kings of Israel. 19 His prayer, and how God received his entreaty, all his sin and his faithlessness, the sites on which he built high places and set up the sacred poles and the images, before he humbled himself, these are written in the records of the seers. 20 So Manasseh slept with his ancestors, and they buried him in his house. His son Amon succeeded him.
Matthew Henry's Commentary on 2 Chronicles 33:12-20
Commentary on 2 Chronicles 33:1-20
(Read 2 Chronicles 33:1-20)
We have seen Manasseh's wickedness; here we have his repentance, and a memorable instance it is of the riches of God's pardoning mercy, and the power of his renewing grace. Deprived of his liberty, separated from his evil counsellors and companions, without any prospect but of ending his days in a wretched prison, Manasseh thought upon what had passed; he began to cry for mercy and deliverance. He confessed his sins, condemned himself, was humbled before God, loathing himself as a monster of impiety and wickedness. Yet he hoped to be pardoned through the abundant mercy of the Lord. Then Manasseh knew that Jehovah was God, able to deliver. He knew him as a God of salvation; he learned to fear, trust in, love, and obey him. From this time he bore a new character, and walked in newness of life. Who can tell what tortures of conscience, what pangs of grief, what fears of wrath, what agonizing remorse he endured, when he looked back on his many years of apostacy and rebellion against God; on his having led thousands into sin and perdition; and on his blood-guiltiness in the persecution of a number of God's children? And who can complain that the way of heaven is blocked up, when he sees such a sinner enter? Say the worst against thyself, here is one as bad who finds the way to repentance. Deny not to thyself that which God hath not denied to thee; it is not thy sin, but thy impenitence, that bars heaven against thee.