The commandment which says “You shall not take the name of the Lord your God in vain”, is broken by some basically everyday. It’s hard to avoid seeing it on television also. Taking His name in vain simply means saying His name for no real reason. Some will say that God isn’t His name, but His title as God is also a name. When you say “God this” or “God that”, without talking to Him or about Him, you are taking His name in vanity. Our Lord Jesus Christ is also our God, so the same is true about His name.
When you say their names, you are drawing their attention. If you draw it for no reason, then you take their attention away from those who might need their help. The Lord God mentioned on at least a few occasions about hearing the cries of people and then acting on their behalf, from the Israelites as slaves in Egypt to oppressed widows and fatherless children (Exodus 22:22-24).
This is also a matter of reverence to not use their names for any flippant expression. It’s very disrespectful to do so. Show them the respect they deserve and do not say their names in vain expressions. You exist by God, and you are saved by Jesus Christ. Show them the respect they deserve.