Matthew 23:28
Thus also ye, outwardly ye appear righteous to men, but within are full of hypocrisy and lawlessness.
Matthew 23:5
And all their works they do to be seen of men: for they make broad their phylacteries and enlarge the borders of their garments,
1 Samuel 16:7
But Jehovah said to Samuel, Look not on his countenance, or on the height of his stature; because I have rejected him; for it is not as man seeth; for man looketh upon the outward appearance, but Jehovah looketh upon the heart.
Psalm 51:6
Behold, thou wilt have truth in the inward parts; and in the hidden part thou wilt make me to know wisdom.
Jeremiah 17:9-10
The heart is deceitful above all things, and incurable; who can know it?
Matthew 12:34-35
Offspring of vipers! how can ye speak good things, being wicked? For of the abundance of the heart the mouth speaks.
Matthew 15:19-20
For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false witnessings, blasphemies;
Mark 7:21-23
For from within, out of the heart of men, go forth evil thoughts, adulteries, fornications, murders,
Luke 16:15
And he said to them, Ye are they who justify themselves before men, but God knows your hearts; for what amongst men is highly thought of is an abomination before God.
Hebrews 4:12-13
For the word of God is living and operative, and sharper than any two-edged sword, and penetrating to the division of soul and spirit, both of joints and marrow, and a discerner of the thoughts and intents of the heart.