Do Christians have faith in oxygen/air?

[SteveII]

I am not saying this is what makes a rational argument. I am saying that in addition to all the reasons that I have outlined here countless times why I believe that list, you cannot show they are false beliefs (or even likely to be false)--so they remain rationally justified beliefs. To say it another way, if you had a way to show they were false, yet I still believed them to be true, then they would not be rationally justified beliefs.

Define your threshold for likely to be false.

There exists a competing naturalistic theory that makes sense of the facts that indicates my belief could easily be wrong. 

Bad parody. I can offer a hundred defeaters for Santa Claus existing. So, while a child's belief might be rationally justified in the absence of those, it will not be if I share them.

That was not the point, you can make up numerous scenarios for culminate evidence pointing to a completely incorrect result, especially given the person has collected the data themselves to only point in one direction.

You don't have a cumulative case of anything if there are reasons and evidence not to think the belief is true--but you are simply ignoring them. Most arguments against Christianity are not rebuttal arguments--they are more along the lines of "well...you haven't proved it".  

Just because you have come to that conclusion, and because you believe that your particular god has properties (like most gods) that cannot be 'unproven' then it must be true.

I am very interested in your definition of 'likely to be false' what on earth does that even mean ?

Further to what I was just saying, my cumulative case would break down if evidence was presented that made it clear that any grouping of my beliefs are likely to be false--which is a lower threshold than simply false. 

A good example: I don't think the earth was created in a literal 6 days. Why? Because I think that the evidence (scientific, exegetical, historical, etc.) shows that that belief is likely to be false. I don't think that my list contains beliefs that can be undercut like this.