1 Samuel 16

"But the LORD said to Samuel, 'Don’t judge by his appearance or height, for I have rejected him. The LORD doesn’t see things the way you see them. People judge by outward appearance, but the LORD looks at the heart.'" v.7
Saul was tall and handsome: he was an impressive looking man. Samuel may have been trying to find someone who looked like Saul to be Israel's next king, but God warned him against judging by appearance alone. When people judge by outward appearance, they may overlook quality individuals who lack the particular physical qualities society currently admires. Appearance doesn't reveal what people are really like or what their true value is.

Fortunately, God judges by faith and character, not by appearance. And because only God can see the inside, only He can accurately judge people. Most people spend hours each week maintaining their outward appearance: they should do even more to develop their inner character. While everyone can see your face, only you and God know what your heart really looks like. What steps am I taking to improve your heart's attitude?

Taken from the NLT LIfe Application Study Bible