The words of his mouth are iniquity and deceit: he hath left off to be wise, and to do good.
He hath left off - instead of leaving off the self-destroying folly of sin (Isaiah 1:16; Jeremiah 4:22; Psalms 14:1-2).
Related Commentaries of Psalms 36:3
Psalms 36:3
3 The words of his mouth are iniquity and deceit: he hath left off to be wise, and to do good.