Thomas Aquinas,
Summa Theologiae — Question 81 - OF RELIGION…
“ Religion is neither a theological nor an intellectual, but a moral virtue, since it is a part of justice, and observes a mean, not in the passions, but in actions directed to God, by establishing a kind of equality in them. And when I say "equality," I do not mean absolute equality, because it is not possible to pay God as much as we owe Him, but equality in consideration of man's ability and God's acceptance. ”
