The reality of the gospels are what is important, the relics? Are not. Things such as the shroud of Turin, spikes reputed to be used to fasten Christ upon the cross, jave literally no relevance, save for those who REQUIRE proofs beyond what God plainly reveals in scripture and revealed in historical documents.
The serpent of Moses was destroyed because people were burning incense to it! This provides guidance that we are not to seek such things, rather place your energies in establishing a closer relationship with God, in that you may be used of God.
Scripture clearly mandates that you Leviticus 26:1
"'Do not make idols or set up an image or a sacred stone for yourselves, and do not place a carved stone in your land to bow down before it. I am the LORD your God
so that you do not act corruptly and make a graven image for yourselves in the form of any figure, the likeness of male or female,
You shall not make for yourself an idol, or any likeness of what is in heaven above or on the earth beneath or in the water under the earth.