John Wesley on 2 Kings 23:26

Notwithstanding - Because though the king was most hearty in his repentance and acceptable to God, and therefore the judgment was delayed for his time; yet the people were in general corrupt, and secretly averse from Josiah's pious reformation, as appears from the complaints of the prophets, especially Jeremiah and Zephaniah, against them: and by the following history, wherein we see, that as soon as ever Josiah was gone, his children, and the princes, and the people, suddenly and greedily returned to their former abominations. Because - The sins of Manasseh, and for the men of his generation; who concurred with him in his idolatrous and cruel practices, are justly punished in this generation: because of God's sovereign right of punishing sinners when he sees fit: because of that publick declaration of God, that he would visit the iniquity of the fathers upon the children: and principally, because these men had never sincerely repented of their own, nor of their fathers sins.