Matthew 23:26
Thou blind Pharisee! cleanse first the inside of the cup and dish, that their outside may become clean also.
Matthew 12:33
Either make the tree good, and its fruit good; or make the tree corrupt, and its fruit corrupt: for the tree is known by the fruit.
Luke 6:45
A good man, out of the good treasure of his heart, produceth what is good; and a wicked man, from the evil treasure in his heart, produceth that which is evil: for out of the abundance of the heart the mouth speaketh.
2 Corinthians 7:1
HAVING therefore these promises, beloved, let us cleanse ourselves from all defilement of flesh and spirit, perfecting holiness in the fear of God.
Hebrews 10:22
let us come to him with a true heart, in full assurance of faith, having our hearts sprinkled from an evil conscience, and the body washed with pure water:
James 4:8
Draw nigh to God, and he will draw nigh to you. Make clean your hands, ye sinners; and purify your hearts, ye double-minded.