Communion is something a person does AFTER they get saved.
Yes, I would tell them they had better NOT take communion until after they have repented of their sins and become born again
Eating and drinking unworthily refers to partaking in the Lord's Supper (communion) without proper self-examination and respect for its significance, which will lead to judgment or condemnation. This is found in 1 Corinthians 11:27-29, where it warns that those who do so are guilty of disrespecting the body and blood of the Lord.
Those that have not been born again, or those who have that are living in sin should never take communion until they get right with the Lord, otherwise they will reap judgment or condemnation due their sowing to the flesh (sin) causing them to reap corruption (Gal 6:7,8)
So when are we going to start accepting what God says in His Word and quit playing games?
The last days are upon is and those playing religious games are headed someplace they are not expecting to go!
Many among us don't know where their bible is, much less what's in it.
Don't tell that to the catholics.
They think they are vampires and cannibals