“You shall not take the name of the LORD your God in vain, for the LORD will not hold him guiltless who takes his name in vain.” (Deuteronomy 5:11 ESV).
We should never utter the name of the Lord worthlessly or deceitfully. God prohibits using His name in oaths or vows when intentionally left unfulfilled; some take deceptive oaths and tack on God’s name as if to convince others that they are serious. We should never make the Holy lowly and common by disconnecting His name from His majesty, power and person. The name of the Lord is sacred & majestic and should conjure up worship and appreciation in us. It should never be part of our commonplace vernacular like slang.
The mention of God carry’s glory (weight) with it; it should evoke reverence. We should be aware of using it in a flippant or manipulative way; the Hebrew word for vain is also translated as false, empty, worthless, or lie. God, and His name, are holy (different, separated & morally pure) – are you approaching Him that way or has He (and His name) become common and mundane?