James 4:8
Draw near to God, and He will draw near to you: cleanse your hands, O sinners, and purify your hearts, ye double minded.
Matthew 12:33
Either allow the tree to be good, and it's fruit good; or shew the tree to be corrupt, and it's fruit corrupt: for the tree is known by it's fruit.
Matthew 15:19-20
For out of the heart proceed wicked disputings, murders, adulteries, fornications, thefts, false-witnessings, slanders:
Matthew 23:26-27
thou blind pharisee, cleanse first the inside of the cup and of the dish, that the outside of them may be also clean.
Luke 11:39
But the Lord said unto him, ye pharisees clean the outside of the cup and of the platter, but your inward part is full of rapine and wickedness.
Acts 8:22
Repent therefore of this thy wickedness, and pray to God, if so be the thought of thine heart may be forgiven thee:
Romans 1:21
so that they are inexcusable; because having thus known God they glorified Him not as God, neither were they thankful; but were infatuated by their own reasonings, and their heart being void of understanding was darkened.
1 Corinthians 3:20
and again, "The Lord knoweth the thoughts of the wise, that they are vain."