James 1:23-24
For anyone who hears the word but does not carry it out is like a man who looks at his face in a mirror, / and after observing himself goes away and immediately forgets what he looks like.

1 Corinthians 13:12
Now we see but a dim reflection as in a mirror; then we shall see face to face. Now I know in part; then I shall know fully, even as I am fully known.

2 Corinthians 3:18
And we, who with unveiled faces all reflect the glory of the Lord, are being transformed into His image with intensifying glory, which comes from the Lord, who is the Spirit.

Matthew 15:18-19
But the things that come out of the mouth come from the heart, and these things defile a man. / For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false testimony, and slander.

Luke 6:45
The good man brings good things out of the good treasure of his heart, and the evil man brings evil things out of the evil treasure of his heart. For out of the overflow of the heart the mouth speaks.

Hebrews 4:12
For the word of God is living and active. Sharper than any double-edged sword, it pierces even to dividing soul and spirit, joints and marrow. It judges the thoughts and intentions of the heart.

Romans 12:2
Do not be conformed to this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what is the good, pleasing, and perfect will of God.

Philippians 4:8
Finally, brothers, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think on these things.

Galatians 5:22-23
But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, / gentleness, and self-control. Against such things there is no law.

Ephesians 4:22-24
to put off your former way of life, your old self, which is being corrupted by its deceitful desires; / to be renewed in the spirit of your minds; / and to put on the new self, created to be like God in true righteousness and holiness.

Jeremiah 17:9-10
The heart is deceitful above all things and beyond cure. Who can understand it? / I, the LORD, search the heart; I examine the mind to reward a man according to his way, by what his deeds deserve.

Psalm 139:23-24
Search me, O God, and know my heart; test me and know my concerns. / See if there is any offensive way in me; lead me in the way everlasting.

1 Samuel 16:7
But the LORD said to Samuel, “Do not consider his appearance or height, for I have rejected him; the LORD does not see as man does. For man sees the outward appearance, but the LORD sees the heart.”

Ezekiel 36:26
I will give you a new heart and put a new spirit within you; I will remove your heart of stone and give you a heart of flesh.

Psalm 51:10
Create in me a clean heart, O God, and renew a right spirit within me.