Compare Exodus 20 and notes.

Moses here adopts the Ten Words as a ground from which he may proceed to reprove, warn, and exhort; and repeats…

Take ... in vain. —Literally, You shall not put the name of Jehovah your God to vanity: i.e., to anything that is false, …

(See Gill on Deuteronomy 5:6).

There is some variation here from Exodus 20, similar to the variation between the Lord's Prayer in Matthew 6 and Luke 11. It is more necessary that…