Thus the Lord Yahweh showed me and, behold, the Lord Yahweh called for judgment by fire; and it dried up the great deep, and would have devoured the land.
They've become so crooked. God laid the plumbline in order that, of course, the purpose of the plumbline is to make the straight corner, the straight wall. God held the plumbline and He could see the crookedness, the perversity.