“Reverence the Shroud”? Before being so quick to condemn this, consider that if the Shroud were acknowledged by all to be the Shroud of Christ (and so proven), that it is not just an image — it also contains the Blood of Christ.
I’m not saying that it has healing power, I’m just saying that, considering the Roman Catholic and most of the Protestant World reverence the Body and Blood of Christ in Holy Communion, the Blood of Christ is extremely significant in itself.
Well, the body and blood is considered by evangelicals to be consumed in a spiritual sense, with eating and drinking being metaphors for spiritual receiving. Even if bits of the body and blood were believed to be present there in the cloth with all their spiritual power, it wouldn’t be the shroud itself that was received, but the power of the blood and body as applicable.