Mattityahu 5:21-22

You have heard that it was said to the ancients, LO TIRTZACH (Do not murder), and every rotzeach (murderer) shall be liable before the Bet Din (Court). But I say to you, that everyone who harbors kaas (anger) against his Ach, his chaver, shall be subject to mishpat (judgment); and whoever shall say to his Ach, Reyka! (Good for nothing!) will be subject to the Sanhedrin; and whoever shall say Shoteh! (Fool) shall be subject to Eish Gehinnom (Fire of Hell).