God as a non-empirical being

[Hatshepsut]

This is religion's bread and butter: unfalsifiable claims...Religion has never made a single testable claim that has been proved correct. For example, prayer fails like a motherfucker if you put it under scientific conditions. It only "works" when people are free to interpret the results however they want and confirmation bias takes care of the rest.

While I agree with your general thesis of obscurantism as linchpin of religion, your other two assertions are rather sweeping. Never  a single testable claim? I would need only a single counterexample to shoot that down though I'll refrain. But if debating, we don't want to go out on a limb with words like "never" unless we're absolutely sure.

Prayer is clearly ineffective when it comes to things like curing cancer. Yet in fact a number of studies have shown that it can improve measurable health outcomes and may not be a simple matter of confirmation bias. I leave the literature search on this to you while noting that any effects found for prayer are modest and need not of course derive from intervention by a supernatural being. It could be something as simple as that the patients in a study's "praying" group did a better job of following the doctor's instructions.