Acts 6:2

It is not right that we should leave the word of God and serve tables — In the first Church, the primary business of apostles, evangelists, and bishops, was to preach the word of God; the secondary, to take a kind of paternal care (the Church being then like a family,) for the food, especially of the poor, the strangers, and the widows. Afterward, the deacons of both sexes were constituted for this latter business. And whatever time they had to spare from this, they employed in works of spiritual mercy. But their proper office was, to take care of the poor. And when some of them afterward preached the Gospel, they did this not by virtue of their deaconship, but of another commission, that of evangelists, which they probably received, not before, but after they were appointed deacons. And it is not unlikely that others were chosen deacons, or stewards, in their room, when any of these commenced evangelists.