Proverbs 10:18-21

The one who hides his hatred while pretending to be your friend is nothing but a liar. But the one who slanders you behind your back proves that he’s a fool, never to be trusted. If you keep talking, it won’t be long before you’re saying something really wrong. Prove you’re wise from the very start— just bite your tongue and be strong! The teachings of the godly ones are like pure silver, bringing words of redemption to others, but the heart of the wicked is corrupt. The lovers of God feed many with their teachings, but the foolish ones starve themselves for lack of an understanding heart.