What philosophical evidence is there against believing in non-physical entities?

[robvalue]

I'll give you a very quick demonstration that almost everyone who claims to be receiving messages from God is, in fact, not:

People making such claims disagree with each other about what God says and wants.

The only other explanation is that he intentionally misleads almost everyone. In such a case, any messages from him should be disregarded.

I would agree... contradictory claims cannot both be true!

It seems a sensible principle, yes.

This puts everyone who claims to be having any sort of communication "from God" in an extremely dubious position. They are either the only one getting it right, or they are deluded. Statistically, they are deluded, even if God is actually talking to anyone at all.

The fact so many people really believe God talks to them through leaves and such shows how the underlying truth matters so little when the belief is so strong.