Genesis 6:5

5 The LORD saw how great the wickedness of the human race had become on the earth, and that every inclination of the thoughts of the human heart was only evil all the time.

Read Genesis 6:5 Using Other Translations

And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.
The LORD saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually.
The LORD observed the extent of human wickedness on the earth, and he saw that everything they thought or imagined was consistently and totally evil.