Matthew 23:28
Even so you also appear righteous to men outwardly, but inside you are full of hypocrisy and iniquity.
Matthew 23:5
But they do all their works in order to be seen of men. They make their phylacteries broad and enlarge the borders of their garments.
1 Samuel 16:7
But Jehovah said to Samuel, Do not look on his face, nor on his height, because I have refused him. For He does not see as man sees. For man looks on the outward appearance, but Jehovah looks on the heart.
Psalm 51:6
Behold, You desire truth in the inward parts; and in the hidden part You shall make me to know wisdom.
Jeremiah 17:9-10
The heart is deceitful above all things, and desperately wicked; who can know it?
Matthew 12:34-35
Offspring of vipers! How can you, 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 come evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies;
Mark 7:21-23
For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders,
Luke 16:15
And He said to them, You are those who justify yourselves 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 living and powerful and sharper than any two-edged sword, piercing even to the dividing apart of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.