1 Samuel 16:7

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.

God told Samuel, "Don't judge by his looks or height, I've not chosen him. People see the outer persona, but I see the heart."