John Trapp on Psalms 36:3

Verſ. 3. The words of his mouth are iniquity and deceit] That is, ſaith Calvin, he hath ſomething to ſay to excuſe and juſtifie himſelf, to the hardening of his heart, and haſtening of his deſtruction; as there is no Wool ſo coarſe but will take ſome colour. But God will one day waſh off his varniſh with rivers of Brimſtone; hee can skill of none other Language but that of Hell; the words of his mouth are, deſiderium & dolus; there is no truth, and as little truſt to be put in any thing that he ſpeaketh. And why? there is no fear of God before his eyes. See a like Text, Rom. 3.13, 14, 15.

He hath left off to be wiſe, and to do good] That little light he once had, he hath loſt, and caſt off ſuch good practices as once in hypocriſie he performed; neither will he learn to do better. Dicit reprobos fugitare rationem bene agendi, ne vitam ſuam in melius corrigere cogantur, ſaith Vatablus.