Genesis 6:4-5 The Nephilim were in the earth in those days, and also after that, when the sons of God came in unto the daughters of men, and they bare children to them: the same were the mighty men that were of old, the men of renown.

ASV_Strongs⁽ⁱ⁾

4 H5303 The Nephilim H776 were in the earth H3117 in those days, H310 and also after H3651 that, H834 when H1121 the sons H430 of God H935 came in H1323 unto the daughters H120 of men, H3205 and they bare H1992 children to them: the same H582 were the mighty men H5769 that were of old, H582 the men H8034 of renown.

5 H3068 And Jehovah H7200 saw H7451 that the wickedness H120 of man H7227 was great H776 in the earth, H3336 and that every imagination H4284 of the thoughts H3820 of his heart H7535 was only H7451 evil H3117 continually.