One thing I will note, is that a lot of religions are selective in donations based on creed and this is a thing not found in secular organisations usually, or at least much more rarely. A great example is that back during the great famine in Ireland, the protestants were on average far richer than Catholics. As such they were able to feed themselves easily even with the failure of the lompar potato crop. They had soup kitchens that only fed other protestants, or Catholics...provided they converted to protestantism.