Why the bad language, Farsi چرا بد زبانی؟
In general, the Second Commandment governs this area: "Thou shalt not take the name of the Lord thy God in vain" (Ex 20:7; Dt 5:11). Specifically, a person must have respect for God’s name. Throughout Sacred Scripture, God’s name is held sacred. He reveals His name to those who believe, and through this revelation, invites them to an intimate and personal relationship.