One of the frequent claims I hear from theists is that God is not material, but is somehow “immaterial.” I have no idea what it means for something to “exist” (in the sense of being more than conceptual) but yet isn’t something we would call “material.”
You and I have plenty of experience with things that exist that are material in nature. Literally everything we interact with on a daily basis is something that is made from material stuff, but God is apparently something altogether different in nature. The problem is, without any experiences of this “immaterial” stuff, it becomes impossible for me to get my head around what exactly God is, which is a massive stumbling block for accepting that such a being exists.
Listening to some Catholics, and other more sophisticated philosophers, I also sometimes hear that “God isn’t a being, God is being”, which I’ve taken to mean that God is existence (although this has never really been clear to me either.) It all makes no sense to me, as I would say that existence is really just a description of something that manifests in space-time. This loving God that wants to have a relationship with me sure is confusing!
My point to this post is simply this: If you want me to accept God exists, and is “immaterial”, you’re going to have to explain to me what this means, and how I would meaningfully distinguish between God existing and not existing. Until then I have to employ skepticism towards your claim, and reject the claim that God exists.