A challenge to any and all religions collectively.

[vorlon13]

When a Catholic takes part in the sacrament of the Eucharist, she believes that the bread and wine change their substance into the body and blood of Christ, but they don't change their elemental form - to any conceivable test, the remain bread and wine.

Indeed, every time a catholic believer with celiac problems reacts to a jesus biscuit, it is demonstrable proof (LOL, and proof beyond anything the catholics have about any of their beliefs) that the catholic beliefs surrounding transubstantiation are false.

That the church poobahs nevertheless decree the biscuits still contain gluten regardless is really, really stupid if you think about it.

It's another religion 101 thing, don't keep rubbing believers nose in shit that disproves the faith.  If transubstantiation were true, and realizing there is no recipe for jesus biscuits recorded in scripture, transubstantiation would work on anything ingested that the believer believed to be an authentic biscuit regardless of its composition.