Genesis 6:5

1 Now when men began to multiply on the face of the earth and daughters were born to them,

2 the sons of God saw that the daughters of men were beautiful, and they took as wives whomever they chose.

3 So the LORD said, “My Spirit will not contend with man forever, for he is mortal; his days shall be 120 years.”

4 The Nephilim were on the earth in those days—and afterward as well—when the sons of God had relations with the daughters of men. And they bore them children who became the mighty men of old, men of renown.

5 Then the LORD saw that the wickedness of man was great upon the earth, and that every inclination of the thoughts of his heart was altogether evil all the time.

6 And the LORD regretted that He had made man on the earth, and He was grieved in His heart.

7 So the LORD said, “I will blot out man, whom I have created, from the face of the earth—every man and beast and crawling creature and bird of the air—for I am grieved that I have made them.”

8 Noah, however, found favor in the eyes of the LORD.

9 This is the account of Noah. Noah was a righteous man, blameless in his generation; Noah walked with God.

Read all of Genesis 6