A pastor remarked that there is no greater service than Christian service. The pastor than limited Christian service to those instances where one directly shared the Gospel. But given that we are not solely spiritual beings, shouldn't service intending to meet these other needs if those are the specific fields one has been called to address as one's vocation also be considered Christian service? Do you really want a Christian fireman to be exegeting the Scriptures to you when he should be putting out your house fire? Wasn't one of Protestantism's initial goals to correct this kind of errant perspective that had crept into medieval Christianity?