Topic: taking the Lord's name in vain
Several of my sci-fi characters come from a religious world, New Bethlehem. They're teenagers, so I do have them mildly curse occasionally. For example, one of the teens says, "I'd resist it like hell." Is there anything in the Bible that addresses cursing, besides the obvious of not taking the Lord's name in vain?
Also, are any of the following considered taking the Lord's name in vain:
Good gracious
Holy cow
What in Heaven
Dammit
Finally, if my characters are in a life-and-death situation, is it okay for them to cry out, "God, help us!" without violating the commandment?
Thank you.
Dirk