The Second Commandment prohibits giving any creature the worship that is due to God alone.
Nobody worships the Shroud.
I wonder Arthur. If the Shroud is what it really, really appears to be then it has the blood of our incarnate God on it.
In which case there may be a theological argument for worshipping it, just as we worship Christ’s Real Presence in the Eucharist.
Not something I can get into now though. It’s very late where I am.
May His blood be upon us, and on our children. Amen.