I agree. So how could we even begin to tell a deception from the truth?
		
		
	 
Why does this apply to supernatural/divine realms or entities, but not to human-made constructs or institutions?  I, personally, feel that what many (including myself) might call our pitfalls of illusion and ideology are rooted in our very consciousness, making them essential components of our cognitive existence.  To attempt to break through these ideological barriers and arrive at some pristine, primeval, objective Truth would result in the death of consciousness (as we understand it, being trapped within it).
Thus, in my opinion, social constructs and divine constructs spawn from the same source (and I would categorize divine constructs as social constructs).
	
		
	
	
		
		
			We do not need to impose such tendencies. You asked me a question though that attempted to box it into those, or I misunderstood your intent 

. I doubt it is possible for humans to see things outside of a ego-centric perspective, much less outside a human-centric perspective.
		
 
		
	 
Both characterizations stand, in my opinion (providing the entity is real):
If it is a supranatural entity whose actions and decisions (or what we perceive as such) lie beyond our comprehension, then you have no way of knowing what it wants, and you should be skeptical of it.
If it is an entity that actually possesses anthropomorphic qualities (and we haven't simply projected these onto it) then you have to take into account the fact that it might choose to deceive you because you did something to annoy it, or displease it; or, finally, it has no achievements in mind.  Its intentions are simply for its own satisfaction.  If this is the case, you should be skeptical of it.
Furthermore, provided it is actually a social construct that is a figment of some complex processes taking place within your mind, you should be skeptical of it.  
The final argument being, as you've already said, that if we haven't had our own experience, you can't possibly explain it to us; to which I have no retort.
Belief, I have so specify though, is more persuasive if the subject possessing the belief expresses that she does not "know" the object of her belief.  To know and to believe are very different.  Belief requires ignorance, but not a negative ignorance.  In belief, ignorance assumes a positive form.  That which you do not know becomes the support for your belief.