'Clean' in the Bible

The words of the Lord are true words: like silver tested by fire and burned clean seven times.

The Lord gives me the reward of my righteousness, because my hands are clean before him.

Because of this the Lord has given me the reward of my righteousness, because my hands are clean in his eyes.

The fear of the Lord is clean, and has no end; the decisions of the Lord are true and full of righteousness.

Who has full knowledge of his errors? make me clean from secret evil.

For my clean and upright ways keep me safe, because my hope is in you.

Put me in the scales, O Lord, so that I may be tested; let the fire make clean my thoughts and my heart.

I will make my hands clean from sin; so will I go round your altar, O Lord;

Let all my wrongdoing be washed away, and make me clean from evil.

Make a clean heart in me, O God; give me a right spirit again.

Truly, God is good to Israel, even to such as are clean in heart.

As for me, I have made my heart clean to no purpose, washing my hands in righteousness;

How may a young man make his way clean? by guiding it after your word.