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.
Jewish Publication Society of America Version (JPS1917) - Deuteronomy 5:11 >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.