6:4 The Nephilim were on the earth in those days (and also after this) when the sons of God were having sexual relations with the daughters of humankind, who gave birth to their children. They were the mighty heroes of old, the famous men.
Genesis 18:19
18:19 I have chosen him so that he may command his children and his household after him to keep the way of the Lord by doing what is right and just. Then the Lord will give to Abraham what he promised him.”