Matthew 23:26
Blind Pharisee! First cleanse the inside of the cup and dish, that the outside of them may be clean also.
Matthew 12:33
"Either make the tree good, and its fruit good; or make the tree bad, and its fruit bad; for a tree is known by its fruit.
Luke 6:45
The good man out of the good treasure of his heart brings forth good, and an evil man out of the evil treasure of his heart brings forth evil. For out of the abundance of the heart his mouth speaks.
2 Corinthians 7:1
Since we have these promises, beloved, let us cleanse ourselves from every defilement of flesh and spirit, perfecting holiness in the fear of God.
Hebrews 10:22
let us draw near with a true heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.
James 4:8
Draw near to God and he will draw near to you. Cleanse your hands, you sinners, and purify your hearts, you double-minded.