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 sees not as man sees; for man looks on the outward appearance, but the LORD looks on the heart.
All Commentaries on 1 Samuel 16:7 Go To 1 Samuel 16
Tertullian of Carthage
AD 220
You are human, and so you know other people only from the outside. You think as you see, and you see only what your eyes let you see. But “the eyes of the Lord are lofty.” “Man looks on the outward appearance, God looks on the heart.” So “the Lord knows them that are his” and roots up the plant which he has not planted. He shows the last to be first, he carries a fan in his hand to purge his floor. Let the chaff of light faith fly away as it pleases before every wind of temptation. So much the purer is the heap of wheat which the Lord will gather into his garner.