Co-religionist

From the mid-sixteenth century, Western Christians – Protestants as well as Roman Catholics, thanks to the great split of the Reformation – interested themselves afresh in their afflicted co-religionists in the East.

Moreover, the greater charitability of religious people in studies is accounted for by their contributing more to coreligionists, and the bulk of the charitability of highly religious people in the real world consists of charity to their own group.