Command 8 Do Not Bear False Witness

Do Not Slander: Church Fathers and Preachers, and Catholic Catechism, CCC 2464

The Church Fathers focus on our love for our neighbor when contemplating this commandment.  St Gregory Palamas in our English translation renders the commandment as, “You shall not accuse anyone falsely.”  We are warned that if we accuse anyone falsely, we may “become like the devil, who falsely accused God to Eve and was cursed by God.  Rather, we should conceal our neighbor’s offense, unless by so doing others may be injured; and in this way we will imitate not Ham, but Shem and Japeth, and so like them receive the blessing.”
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Command 8 Do Not Bear False Witness

The Decalogue in the Torah, Blog 6, Do Not Bear False Witness Against Your Neighbor

A common misconception is that this Commandment only forbids us to lie. However, this Mitzvah goes deeper. Not only should we not destroy the reputation of our neighbor, we should also guard the reputation of our neighbor like we should build a parapet on our roof. Not only does this Mitzvah forbid us to lie, it also forbids us from telling the truth in a mean and heartless and cruel manner. […]