31My brothers and sisters, not many of you should become teachers. As you know, we teachers will be judged with greater strictness than others. 2All of us often make mistakes. But if a person never makes a mistake in what he says, he is perfect and is also able to control his whole being. 3We put a bit into the mouth of a horse to make it obey us, and we are able to make it go where we want. 4Or think of a ship: big as it is and driven by such strong winds, it can be steered by a very small rudder, and it goes wherever the pilot wants it to go. 5So it is with the tongue: small as it is, it can boast about great things.
Just think how large a forest can be set on fire by a tiny flame! 6And the tongue is like a fire. It is a world of wrong, occupying its place in our bodies and spreading evil through our whole being. It sets on fire the entire course of our existence with the fire that comes to it from hell itself. 7Human beings can tame and have tamed all other creatures — wild animals and birds, reptiles and fish. 8But no one has ever been able to tame the tongue. It is evil and uncontrollable, full of deadly poison. 9
We use it to give thanks to our Lord and Father and also to curse other people, who are created in the likeness of God. 10Words of thanksgiving and cursing pour out from the same mouth. My brothers and sisters, this should not happen! 11No spring of water pours out sweet water and bitter water from the same opening. 12A fig tree, my brothers and sisters, cannot bear olives; a grapevine cannot bear figs, nor can a salty spring produce sweet water.
13Are there people among you who are wise and understanding? They are to prove it by their good lives, by their good deeds performed with humility and wisdom. 14But if in your heart you are jealous, bitter, and selfish, don't sin against the truth by boasting of your wisdom. 15Such wisdom does not come down from heaven; it belongs to the world, it is unspiritual and demonic. 16Where there is jealousy and selfishness, there is also disorder and every kind of evil. 17But the wisdom from above is pure first of all; it is also peaceful, gentle, and friendly; it is full of compassion and produces a harvest of good deeds; it is free from prejudice and hypocrisy. 18And goodness is the harvest that is produced from the seeds the peacemakers plant in peace.