Proverbs 14:29-31

Complete Jewish Bible

²⁹ Being slow to anger goes with great understanding,
    being quick-tempered makes folly still worse.

³⁰ A tranquil mind gives health to the body,
    but envy rots the bones.
³¹ The oppressor of the poor insults his maker,
    but he who is kind to the needy honors him.