From Jeff Jarvis’ “BuzzMachine” article, And God rolled His eyes:
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.
“[Thou shalt not take the name of the Lord thy God in vain.] This precept not only forbids all false oaths, but all common swearing where the name of God is used, or where He is appealed to as a witness of the truth. It also necessarily forbids all light and irreverent mention of God, or any of His attributes…”
“The Septuagint has: ou leepsee epi mataioo, ‘Thou shalt not take the name of Yahweh thy God upon a vain thing, a trifling, frivolous occasion.’ This accords with our Lord’s exposition of the commandment, as prohibiting all swearing in ordinary social conversation -- all light and irreverent use of the name, titles, attributes, works of God, or anything that is His.”