584. Verse 5 And Jehovah saw that the evil of man had been increased on the earth, and all the imagination of the thoughts of his heart was altogether evil all the day long.

'Jehovah saw that the evil of man had been increased on the earth' means that the will for good started to go out of existence. 'All the imagination of the thoughts of his heart was altogether evil all the day long' means that there was no perception of truth and good.