Do not be hurried with your mouth, and do not let your heart hurry to bring forth a word before God. For God is in Heaven, and you are on earth; on account of this, let your words be few.
Do not allow your mouth to cause your flesh to sin; do not say before the angel that it was an error. Why should God be angry over your voice, and destroy the work of your hands?
But I say to you, Everyone who is angry with his brother without cause shall be liable to the Judgment. And whoever says to his brother, Raca, shall be liable to the sanhedrin; but whoever says, Fool! shall be liable to be thrown into the fire of Hell.
And the tongue is a fire, the world of unrighteousness. So the tongue is set among our members, defiling the whole body, and inflaming the course of nature, and being inflamed by Hell.
not giving back evil for evil, or reviling against reviling; but, on the contrary, give blessing; knowing that you were called to this in order that you might inherit blessing.