The relation between you and the priest can't be mutual without the destruction of a whole lot of shit--perhaps most notably the priest himself. As you say, it is forced by the circumstances--hearts in place or not, his surplus is non-accidental, as is your scarcity. His religion not only perpetuates the surplus and scarcity through preaching submission to it, it also *is* this surplus. Religion is a congealed accumulation of food, land, etc, priests are functionaries who serve that accumulation. The system they serve doesn't somehow exist 'in spite' of their hearts being where they are supposed to be (presumably between their ribs) and beating--having no lifeforce of its own, it relies on those hearts to pump blood and move around and bring more shit into it.
Look at places where missionaries go and feed people--places that have been and are being targeted for accumulation. The people there are starving not because they aren't growing enough food to feed themselves--they are, but it is taken and exported and accumulated and then the charity people come from their religions, NGOs, whatever, with the deeply idiotic notion that they are giving something to people when in fact they are simply returning a remnant (a small, stripped, heavily processed remnant with an international aid logo or cross stamped on it) of what the system they serve has extracted from the people, and then only as bait to lure them in to still greater extraction.
My point is that the practical problem has no a practical solution. You and the priest are not going to patch things up between yourselves and make it right. I wouldn't worry about your relationship turning toxic, I would assume it is polluted and rotten from the very start, and focus my mutualistic energies elsewhere.