What is "Christian Prog or CPR" ?

Many people think similarly.

No, in the best case-situation just an angel speaking in tongues  (worst case: a fallen angel). But I have read enough in the Bible during the last 30 years to believe that God does not practice backward masking.

I agree, that definition CPR as a new genre is not systematically consistent. But if some artists are talking about CPR as about their new movement, anybody can - by my opinion - accept it as their own self-characterization across prog-rock subgenres. 

I think, that is possible artists, which axplicitly claims, that they are CPR, additionally to nornal genres mark extra as CPR. Not that we must create table, where in rows are prog-rock sub-genres and in columns Christian denominations  

Phenomen "CPR" is interesting thing in history of prog-rock 

What...in the Biblical sense...?

Well, I would say in general there is something suffocating about overtly religious content (for the non religious listener).  It depends on whether the religion in question in the music is the same as your religion or not.  My all time favourite musician ever, Ilayaraja, did a whole album of hymns in praise of Lord Shiva fused with Western classical music, including operatic vocals and heavily symphonic orchestration.  I could APPRECIATE the album from a distance but never fell in love with it.  I am Hindu only by birth and certainly not a devout one.  I find it more inspiring when Stevie Wonder talks about how leaves turn to brown when autumn comes around (as a blind man he can't actually see that) than about God this and God that (Fulfillingness first finale).  I respect that it works for people who are religious but I personally find that kind of music suffocating.