Remember, the words you are reading are made up of alphabetical letters that were derived from Egyptian hieroglyphics which are themselves a combination of standard signs, pictures and adaptations of Sumerian stylized hieroglyphics which themselves were derived from signs ~ even shamanic signs, pictures, and so forth.
The Shroud is a sign and a picture. It's a sign in the sense that if you have sufficient scientific knowledge you can examine it and attempt to determine something about the maker.
Idolotry is a totally different topic. It does not derive from the signs, pictures, letters, hieroglyphs and so forth. Rather, it has to do with putting one's self, or a thing, in God's place. Asking "What Would Jesus Say" is idolotry. Asking "What Did Jesus Say" is a request for information from the record maintained in the New Testament.
Oh, yeah, the first, "What Would Jesus Say" requires that you or an associate put yourself in Jesus' place ~ that is, to become God ~ and then try to think a Godlike thought that will give you the ability to speak as God.
Moses was at the Minnesota State Fair?
/on a stick>
Cheers!