Deuteronomy 5:11 in the World English Bible
“You shall not misuse the name of the LORD your God; for the LORD will not hold him guiltless who misuses his name.
Context
10 And shewing mercy unto thousands of them that love me and keep my commandments.
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.
12 Keep the sabbath day to sanctify it, as the LORD thy God hath commanded thee.