Scientific knowledge versus spiritual knowledge

[Whateverist]

That's somewhat akin to asking what the difference between the natural and supernatural is. In this case, it depends on the meanings of science and spiritual.

I consider knowledge the genus and science a species within that set, one distinguished by the study of particular beings as they are found in nature. I don't think scientific knowledge encompasses the entire set.

Certainly in ordinary language "knowledge" can be divided in any number of ways, some of which we may be familiar with while others are beyond our ken. I may have some knowledge of gardening that you don't. You surely have knowledge of painting which I do not. But with gardening and painting we can point to tools and methods and results which support that knowledge. Metaphysics isn't like that.

Science: The intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.

Personally, I consider all forms of transcendent truths 'spiritual', i.e. transcendent in that they are certain and apply universally to all particulars. Like metaphysics, math doesn't have to run experiments per se. I don't need to run an experiment to prove, in general, that particular beings exist or that some beings can be numbered. I also consider that type of knowledge objective because that kind of truth does not depend on the opinion or observation of any particular subject knowing them.

I'm also interested in transcendent truths where they may exist. Certainly mathematics contains many. But all such truths are only falsifiable through internal inconsistency. I think there are also psychological truths but since these are only verifiable in the experience of subjects, they are nye impossible to falsify or vouchsafe. In this sense all psychology is confessional; no matter what truths you may think you possess in that area, you can never be sure they apply to anyone else but yourself.

Mathematics and psychology are pretty starkly different epistemologically. I suspect that theism is entirely like psychology and not at all like mathematics. The truth or falsity of mathematical propositions are not private. But claims regarding gods certainly seem to be entirely private, and so never falsifiable nor vouchsafeable.

Looks to me like the intuition of a supernatural realm is entirely like the intuition of gods themselves, entirely a private matter.