Genesis 3:22

3:22 And the Lord God said, “Now that the man has become like one of us, knowing good and evil, he must not be allowed to stretch out his hand and take also from the tree of life and eat, and live forever.”

Genesis 6:4

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 6:7

6:7 So the Lord said, “I will wipe humankind, whom I have created, from the face of the earth – everything from humankind to animals, including creatures that move on the ground and birds of the air, for I regret that I have made them.”