'Religion' is etymologically related to connotations of joining and binding. This implies some sort of separation, and a process of joining.
Similarly, 'yoga' (by which I do not mean physical exercise) is etymologically related to connotations of union (from 'yuj'). Again, the implication is separation and a process of union.
If you take a serious look at your own experience (the evidence), you will arrive at a similar conclusion to Descartes; roughly, that the evidence of one's senses cannot be taken at face value because they provide similar evidences in a dream which is understood to be entirely illusory upon waking up.
Alas, most of 'Western' (I do apologise in advance to anyone who thinks I'm being too liberal with that word) thought takes the waking state to be absolute, and dream and deep sleep to be subsets of this state. This is an assumption but it runs so deep that it will be difficult for most to see what I'm trying to point out.
First consider that the three states of consciousness experienced (waking, dream and deep sleep) are completely different modes; that is, the dreamer can neither conceive the existence of a waking world which is more 'real' than his current experience, nor will he readily admit that his experience is illusory...until he wakes up and becomes the waker. At this point the illusory nature of the dream cannot be doubted. The money in the dream cannot service debts of the waking state.
Consider, then, that questions as to the origin of the world, the purpose of existence and the nature of God may arise only during dream and waking, because in these states there exists thought and thus by implication a mind -- the conclusion is then drawn that in the absence of a mind, there is also absence of a world (as in deep sleep).
Thus one may conclude that the 3 states of waking, dream and deep sleep have relative and not absolute reality. It will, however, be noticed that there is a substratum integrating these varying experiences and arrogating them.
These are all evidences available to any human being and perhaps could lead one to believe that there might be something to religion after all, beyond the paraphernalia of clothing, places of worship and specific texts.
"The kingdom of heaven is within you; he that findeth his Self shall know it"