Matthew 23:28
Even so ye also outwardly appear righteous unto men, but within ye are full of hypocrisy and iniquity.
Matthew 23:5
But they do all their works that they may be seen of men: they make broad their phylacteries and enlarge the borders of their garments
1 Samuel 16:7
And the LORD replied unto Samuel, Do not look on his countenance or on the height of his stature because I have refused him, for it is not as man sees, for man looks on the outward appearance, but the LORD looks on the heart.
Psalm 51:6
Behold, thou dost desire truth in the inward parts, and in the secret things thou hast made me to know wisdom.
Jeremiah 17:9-10
The heart is deceitful above all things and desperately wicked; who shall know it?
Matthew 12:34-35
O generation of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Matthew 15:19-20
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
Mark 7:21-23
For from within, out of the heart of men, come forth the evil thoughts, the adulteries, the fornications, the murders,
Luke 16:15
And he said unto them, Ye are they who justify themselves before men, but God knows your hearts, for that which is highly esteemed among men is abomination in the sight of God.
Hebrews 4:12-13
For the word of God is alive and efficient and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.