The daughters got Lot drunk, so drunk that he was not aware when they took turns “knowing” him. Both daughters became pregnant. The first daughter had a son, Moab. The second daughter had a son, Ben-ammi. This is another instance of God finding a way to work his will despite the mistakes of people. Moab becomes the father of the Moabites. Ruth is a Moabite. Jesus is a descendant of Ruth.