Genesis 6:1-4 World English Bible (WEB)
6 When men began to multiply on the surface of the ground, and daughters were born to them, 2 God’s sons saw that men’s daughters were beautiful, and they took any that they wanted for themselves as wives. 3 Yahweh said, “My Spirit will not strive with man forever, because he also is flesh; so his days will be one hundred twenty years.” 4 The Nephilim[a] were in the earth in those days, and also after that, when God’s sons came in to men’s daughters and had children with them. Those were the mighty men who were of old, men of renown.
Genesis 6:1-4 New American Standard Bible (NASB)
The Corruption of Mankind
6 Now it came about, when men began to multiply on the face of the land, and daughters were born to them, 2 that the sons of God saw that the daughters of men were [a]beautiful; and they took wives for themselves, whomever they chose. 3 Then the Lord said, “My Spirit shall not [b]strive with man forever, [c]because he also is flesh; [d]nevertheless his days shall be one hundred and twenty years.” 4 The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of men, and they bore children to them. Those were the mighty men who were of old, men of renown.