Proverbs 27:19
As in water face reflects face, so the heart of man reflects the man.
Genesis 6:5
The LORD saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually.
Psalm 33:15
he who fashions the hearts of them all and observes all their deeds.
Mark 7:21
For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery,
James 1:22-25
But be doers of the word, and not hearers only, deceiving yourselves.