Genesis 6:4-5

Webster_Strongs(i)
  4 H5303 There were giants H776 in the earth H3117 in those days H310 ; and also after H3651 that H834 , when H1121 the sons H430 of God H935 [H8799] came in H1323 to the daughters H120 of men H3205 [H8804] , and they bore H1992 children to them, the same H1368 became mighty men H5769 who were of old H582 , men H8034 of renown.
  5 H3068 And God H7200 [H8799] 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.