Proverbs 20:9
King James Version
“Who can say, I have made my heart clean, I am pure from my sin?”
Context
6Most men will proclaim every one his own goodness: but a faithful man who can find?
7The just walketh in his integrity: his children blessed after him.
8A king that sitteth in the throne of judgment scattereth away all evil with his eyes.
9Who can say, I have made my heart clean, I am pure from my sin?
10Divers weights, divers measures, both of them alike abomination to the LORD.
11Even a child is known by his doings, whether his work pure, and whether right.
12The hearing ear, and the seeing eye, the LORD hath made even both of them.