Genesis 6:3 DBY

¹  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.

⁴  In those days were the giants on the earth, and also afterwards, when the sons of God had come in to the daughters of men, and they had borne [children] to them; these were the heroes, who of old were men of renown.

⁵  And Jehovah saw that the wickedness of Man was great on the earth, and every imagination of the thoughts of his heart only evil continually.