'Clean' in the Bible

To the clean in heart all things are clean: but to those who are unclean and without faith nothing is clean; they become unclean in mind and in thought.

To be wise in mind, clean in heart, kind; working in their houses, living under the authority of their husbands; so that no evil may be said of the word of God.

Who gave himself for us, so that he might make us free from all wrongdoing, and make for himself a people clean in heart and on fire with good works.