Hebrews says, “Make sure that no root of bitterness springs forth and defiles you.” It describes bitterness as a root. A root is underground. You can’t see it, but if you let it grow, it’s going to spring forth. A bitter root will produce bitter fruit. What’s on the inside is going to show up on the outside. We try to fix the fruit. We deal with the symptom, but the fruit is not the real problem. We need to go to the source and get rid of the root. Proverbs says, “Guard your heart for out of it