John Trapp on Proverbs 20:9

Verſ. 9. Who can ſay I have made my heart clean?] That can I, ſaith the proud Phariſee, and the Popiſh Juſtitiary. Non habeo Domine, quod mihi ignoſcas; I have nothing Lord for thee to pardon, ſaid Iſidore the Monk. When Saint Paul, that had been in the third Heaven, complains of his inward impurities, Rom. 7.15. and though hee ſhould have known no evil by himſelf, yet durſt hee not look to bee thereby juſtified, 1 Cor. 4.4. And holy Job could ſay,Job 9.30, 31. If I waſh my ſelf with ſnow-water, and make my hands never ſo clean; yet God would plunge him in the ditch, ſo that his own cloths ſhould abhor him. And if thou Lord ſhouldeſt mark iniquities, ſaith David, who ſhould ſtand before thee? Pſal. 130.3.