 to execute judgment on all, to convict all who are ungodly among them of all their ungodly deeds which they have committed in an ungodly way, and of all the harsh things which ungodly sinners have spoken against him. So Enoch was prophesying, even in his lifetime, that the Lord was going to come and judge the world for its sin. And his name indicates God's judgment would fall after his death. Then if the genealogies do not have a gap, and let me just say we don't know that for certain,