If the skies errupted with the sound of trumpets and an angel descended to tell me to do something, my first thought would probably be that I'm having some sort of mental break, but if the person standing next me is seeing it, too, then I'll be the first one carving some commandments or whatever. There's a perfectly achievable standard of proof for you.

I do not believe it exists. If it is never, then it must not exist.

proofs I would accept:

(for Christianity)

Biblically accurate angels descend onto earth, to everyone, and submit themselves to scientific testing, which conclude they are made of something non-physical.

Divinity is proven to be a measurable and testable attribute of reality.

Reality warping magic, demonstrated to not be any sort of trick or technology, and limited to those devout to said religion.

God shows his ass to everyone, the only part of him that - according to the bible - won't make a human insane.

the basis of these proofs can be distilled down to some basic requirements: - It must happen in 'reality' not 'in my head'. - It must be testable, and repeatable. - It must have no 'natural/scientific' explanation. - It must be viewable by everyone.

That's not 'all' of the requirements, but regardless of which religion we are talking about: those are the common primitives.

Nothing I've encountered have met these standards. But if those standards of mine are met...