A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh. (Luke 6:45)
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. (1 Samuel 16:7)
“I don’t have to listen to what they say. I can tell by looking that they’re not good Christians.” –anonymous
We are taught many times in Scripture that we can judge a person by his fruit. Here, we are told where to look for fruit.