Only the Lord could know if the Nephite wickedness had exceeded all previous generations of the House of Israel. Accordingly, Mormon says that he got his information from the Lord. The statement is significant because of what we know about the wickedness of the rest of the House of Israel. The Jews among whom Christ ministered were said to be more wicked than any other nation on earth, for there is none other nation on earth that would crucify their God (2 Nephi 10:3). While Enoch saw in vision all the nations of the earth, he was told that the wickedness of this earth exceeded all other earths, among all the workmanship of mine hands there has not been so great wickedness as among thy brethren (Moses 7:23,36). One particular city among the Nephites had reached a similar record-breaking degree of wickedness, their wickedness…was above all the wickedness of the whole earth (3 Nephi 9:9).
Well, congratulations to Mormon’s generation! They win the prize. They were more wicked than the Jews who crucified Jesus. They were more wicked than any previous generation of Nephites. They had become the most wicked people in the entire universe!