Evidence for Believing

[possibletarian]

If a sola scriptura literalist reading of the Bible indicates that prayers today for a Mercedes Benz will definitely result in getting a Mercedes Benz, then that's obviously stupid. 

Of course I would agree

Other parts seem to indicate that we are supposed to ask for humility, poverty, and the good of others.

I agree with that too  

It does say that we aren't supposed to worry about tomorrow, in the part about the lilies of the field, but I never read that as meaning that tomorrow I am guaranteed good health and lots to eat. More that we should be and do good now, because it is good to be good, and not think about the personal consequences.

But it does say these things shall be added unto you (you will get all you need) and all this in the context of asking god for them. A whole nation of praying starving people is incompatible with this.

People obeying the scripture and praying for the sick, and no discernible results distinct from not praying are incompatible too.

But I agree that Christians don't agree at all on how they interpret this, and many will assume that prayers for cash guarantee cash.

They can't agree it obviously does not work, so we become not humble enough, or asking selfishly (even when children are dying) etc.