God saw their works, that they turned from their evil way. God repented of the evil which he said he would do to them, and he didn't do it.
 “When we read in the Scriptures or hear in Churches the word of God, what do we hear but Christ? “And behold a greater than Jonas is here.” If they repented at the cry of one unknown servant, of what punishment shall not we be worthy, if, when the Lord preacheth, whom we have known through so many benefits heaped upon us, we repent not? To them one day sufficed; to us shall so many months and years not suffice? To them the overthrow of the city was preached, and 40 days were granted for repentance: to us eternal torments are threatened, and we have not half an hour’s life certain.”