John Gills Exposition of the Bible Commentary - 2 Chronicles 33:16
And he repaired the altar of the Lord ,.... Which was fallen to ruin, being neglected and disused in his times of idolatry: or, according to the Keri, or marginal reading, and so the Targum, "he built it"; which perhaps he had before pulled down and destroyed: and sacrificed thereon peace offerings and thank offerings ; to the Lord, for bringing him out of captivity, and restoring him to his kingdom; and especially for converting him from his idolatries, giving him repentance for them,... read more
Matthew Henry's Complete Commentary - 2 Chronicles 33:11-20
We have seen Manasseh by his wickedness undoing the good that his father had done; here we have him by repentance undoing the evil that he himself had done. It is strange that this was not so much as mentioned in the book of Kings, nor does any thing appear there to the contrary but that he persisted and perished in his son. But perhaps the reason was because the design of that history was to show the wickedness of the nation which brought destruction upon them; and this repentance of Manasseh... read more