Distinguishing between Ni and spiritual experience

Where do we draw the fine line between the two?

Introverted intuition is a MBTI cognitive process and so pertains to personality. However, since there is no definitive measure of this function, it is difficult to limit its resultant experiences to the mind and define where personality ('of this world') ends and spiritual experience (commonly said to be 'not of this world') begins.

Of course, today, there is increasing evidence of common ground between science and religion, or in this case psychology and spirituality. Therefore, there is likely no fine line at all between the two, but an area where they dissolve into one another.

I'm focusing this topic on Ni out of all the functions since from what i've read so far, Ni seems to readily involve spirituality in much of its description. According to the book, Soul Types,

This is just one example in that book which aims to express that all the functions are pathways toward spirituality.

Then why is Ni thought to be so intrinsically linked to spiritual experience or why is spirituality more emphasized in the descriptions of types with dominant Ni?

 

i'm sorry, i should have written religious experience instead of religion.

this may be a topic of doubt for many people, however it is not my own opinion but a restatement derived from what i've read or researched. that's why i chose the word evidence as it is usually expressed that way from the sources.

in The Spiritual Brain by Beauregard & O'Leary, it mentions

it goes on to describe the other two on and off onto the next page so i won't type all that out.

i haven't read too much into those particular examples, so i cannot discuss these in depth. the idea peaks my curiosity, so i wanted to see what you all thought.

Why God Won't Go Away: Brain Science & The Biology of Belief by Andy Newberg, is another book that is along the same lines. it mainly describes the neurology behind religious experiences (e.g. satori).