Genesis 6:4-6

New Living Translation

⁴ In those days, and for some time after, giant Nephilites lived on the earth, for whenever the sons of God had intercourse with women, they gave birth to children who became the heroes and famous warriors of ancient times.

⁵ The Lord observed the extent of human wickedness on the earth, and he saw that everything they thought or imagined was consistently and totally evil. ⁶ So the Lord was sorry he had ever made them and put them on the earth. It broke his heart.