There are several different interpretations of who the “sons of God” mentioned in Genesis 6:2, 4 might be. One view is that they were a group of angels who rebelled against God and married human women, producing offspring who were half-human and half-angelic. Another interpretation is that the “sons of God” were a group of human descendants of Seth, the son of Adam, who intermarried with the descendants of Cain, the son of Adam, who was banished from the Garden of Eden. Some have suggested that they were worshipers of God, as opposed to the other wicked men. So who were “the sons of God” mentioned in Genesis 6:2, 4 that fathered the Nephilim, who lived before the Flood?