“But there’s another way of looking at taking the Lord’s name in vain. When we partake of the sacrament we renew a covenant to take Christ’s name upon us. When we do so out of habit rather than as a sincere choice, are we taking His name in vain? … The Hebrew word that was translated in our scriptures as vain means meaningless and empty… Perhaps the commandment in Exodus 20:7 should read thou shalt not take upon thyself the name of God with empty and meaningless intent. When we give up the hope Christ offers through His Atonement, are we taking the Lord’s name in vain? Are we rendering His grace, His divine help, as useless, empty, and meaningless in our lives?”

Source: The Law of the Gospel