Genesis 6:4; Genesis 10:8; Genesis 10:9

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.

8 Now Cush became the father of Nimrod; he became a mighty one on the earth.

9 He was a mighty hunter before the LORD ; therefore it is said, "Like Nimrod a mighty hunter before the LORD ."