Deuteronomy 5:11

Verse 11. In vain, by perjury. See verse 20, where the same word is used, ( D.) or by any irreverent speech. Menochius.

LORD or GOD in all caps is from the Hebrew יהוה Yahweh except when otherwise noted as being from the short form יה Yah.

or, You shall not take the name of the LORD your God in vain;