In religious circles, within the minds of the considered and believed reasonable, there is no reason. Reason is only believed to exist within their minds, with no evidence of fact, apart from the fact that they believe reason to be present.
Reason cannot be believed to be present, as belief is designed to override reason, and neuters the ability to reason. Therefore it is logical that if you really believe that you are a reasonable person, then you can’t be.
If however you are non-religious, and you don’t believe in anything, but instead seek fact, then your lack of belief sets your mind free so that it can reason, but only as far as previous beliefs still rooted in the deep subconscious that you may or may not be aware of, allow.