Matthew 23:28
"Even so ye also outwardly appear righteous unto men, but within ye are full of hypocrisy and iniquity."
Cross References (ranked by relevance)
And he said unto them, Ye are they which justify yourselves before men; but God knoweth your hearts: for that which is highly esteemed among men is abomination in the sight of God.
Behold, thou desirest truth in the inward parts: and in the hidden part thou shalt make me to know wisdom.
But all their works they do for to be seen of men: they make broad their phylacteries, and enlarge the borders of their garments,
But the LORD said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for the LORD seeth not as man seeth; for man looketh on the outward appearance, but the LORD looketh on the heart.