Genesis 6:1-3

Darby Translation

6 And it came to pass when mankind began to multiply on the earth, and daughters were born to them,

² that the sons of God saw the daughters of men that they were fair, and took themselves wives of all that they chose.

³ And Jehovah said, My Spirit shall not always plead with Man; for he indeed is flesh; but his days shall be a hundred and twenty years.