2 the sons of God [2] saw how beautiful the daughters of human beings were, and so they took for their wives whomever they pleased. [AA]

3 Then the Lord said: My spirit shall not remain in human beings forever, because they are only flesh. Their days shall comprise one hundred and twenty years.

4 The Nephilim appeared on earth in those days, as well as later, [3] after the sons of God had intercourse with the daughters of human beings, who bore them sons. They were the heroes of old, the men of renown. [AB]