Exodus 20:7

20:7 "You shall not take the name of Yahweh your God in vain, for Yahweh will not hold him guiltless who takes his name in vain.
-World English Bible

Other Translation

20:7 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.
-King James Version