<P> For the same reason, the Catholic Catechism teaches that it is a duty to reject false oaths that others might try to impose; an oath may be made false because it attests to a lie, because an illegitimate authority is requiring it, or because the purpose of the oath is contrary to God's law or human dignity . </P> <P> Members of The Church of Jesus Christ of Latter - day Saints believe in this commandment as written in Exodus 20 . This commandment has been repeated in the LDS Scriptures such as the Book of Mormon and in Doctrine and Covenants . </P> <P> Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain . </P> <P> Keep yourselves from evil to take the name of the Lord in vain, for I am the Lord your God, even the God of your fathers, the God of Abraham and of Isaac and of Jacob . </P>

You shall not take the lord's name in vain meaning