SIR 5:14

14 Be thou not called a privy evil speaker, [[or a twisel tongue, or a privy backbiter]], in thy life, and be thou not taken in thy tongue, and be ashamed. Shame and penance is on a thief, and worst shame [[or worst reproof]], either cursing, is on a man of double tongue. Forsooth hatred and enmity and despising is to a privy backbiter.