Matthew 23:26
Blind Pharisee, first wash clean the inside of the cup or dish, and then the outside will be clean also.
Matthew 12:33
"Either grant the tree to be wholesome and its fruit wholesome, or the tree poisonous and its fruit poisonous; for the tree is known by its fruit.
Luke 6:45
A good man from the good stored up in his heart brings out what is good; and an evil man from the evil stored up brings out what is evil; for from the overflow of his heart his mouth speaks.
2 Corinthians 7:1
Having therefore these promises, beloved friends, let us purify ourselves from all defilement of body and of spirit, and secure perfect holiness through the fear of God.
Hebrews 10:22
let us draw near with sincerity and unfaltering faith, having had our hearts sprinkled, once for all, from consciences oppressed with sin, and our bodies bathed in pure water.
James 4:8
Draw near to God, and He will draw near to you. Cleanse your hands, you sinners, and make your hearts pure, you who are half-hearted towards God.