James 4:8
Approach God and he will approach you. Cleanse the hands, ye sinners, and purify the hearts, ye double-minded.
Proverbs 1:22
How long, ye simple ones, will ye love simplicity? And scoffers delight them in scoffing, and fools hate knowledge?
Jeremiah 13:27
I have seen thine abominations, even thine adulteries, and thy neighings, the lewdness of thy whoredom, on the hills, in the field. Woe to thee, O Jerusalem! Thou will not be made clean. How long shall it yet be?
Psalm 66:18
If I regard iniquity in my heart, LORD will not hear.
Psalm 119:113
I hate those who are of a double mind, but I love thy law.
Isaiah 1:16-19
Wash you, make you clean, put away the evil of your doings from before my eyes. Cease to do evil.
Isaiah 55:7
Let the wicked man forsake his way, and the unrighteous man his thoughts. And let him return to LORD, and he will have mercy upon him, and to our God, for he will abundantly pardon.
Ezekiel 18:31
Cast away from you all your transgressions, by which ye have transgressed, and make you a new heart and a new spirit. For why will ye die, O house of Israel?
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 its fruit.
Matthew 15:19-20
For from the heart comes forth evil thoughts, murders, adulteries, fornications, thefts, FALSE witnessings, revilings.
Matthew 23:26-27
Thou blind Pharisee, cleanse first the inside of the cup and of the platter, so that the outside of them may also become clean.
Luke 11:39
And the Lord said to him, Now ye Pharisees cleanse the outside of the cup and of the platter, but your interior is full of plundering and wickedness.
Acts 8:22
Repent therefore from this thine evil, and beg God, if perhaps the thought of thy heart will be forgiven thee.
Romans 1:21
Because, although knowing God, they did not glorify him as God, nor were they thankful, but became vain in their reasonings and their heart was darkened without understanding.
1 Corinthians 3:20
and again, Lord knows the thoughts of the wise that they are vain.