There you go, you are learning something..,
Indeed, flesh is flesh and spirit is spirit..
There you go assuming again what I know or don't know...
Perception is a function of "observation," whether it is "inner" or "outer." Thus, primitive man felt earth shake and created a superstitious belief that "God" was shaking the earth. The sick were "possessed" by "demons," and thunder and lightening were "God's" wrath.
Unfortunately, philosophy didn't offer a better perspective. Aristotle, for instance, "explained" gravity by concluding that all things fall because everything falls towards the center.
The Church concluded that this mist be true because "obviously" (based on the Bible) man is God's central creation, so there was your "corroboration" to claim that we are not only His central creation but actually in the center of His creation!
Luckily, some people, like Copernicus and Galileo and Kepler, and others were able to approach the issue in a matter that does not depend on one's opinion or belief as much as on whether a model works or not.