Acts 6:2-4

Then the twelve called the multitude of the disciples unto them, and said, It is not reason that we should leave the word of God, and serve tables. (3) Wherefore, brethren, look ye out among you seven men of honest report, full of the Holy Ghost and wisdom, whom we may appoint over this business. (4) But we will give ourselves continually to prayer, and to the ministry of the word.

The twelve Apostles, including Matthias, are here engaged in making suitable arrangements for the correcting of the present, and any future errors which might arise in the Church. And, from this authority it should seem, first sprung that order, which all well regulated societies in the faith have since observed, in the appointment of subordinate offices to the ministry in the Church. Moses, at the suggestion of Jethro, adopted somewhat of the same plan in his days, Exodus 18:14, etc. How truly Apostolic was this advice? How affectionately, as to brethren, was it delivered? And what a lovely view doth it afford of Christ's Church, in this blessed age of the Apostles? We, (said they), will give ourselves continually to prayer, and to the ministry of the word. As if, (and which in one sense is literally the case), their very persons, as well as their time and labors, were not their own. For though Apostles, their eminency consisted not in rank, but in usefulness. Jesus their Lord, while loving their persons, loved their office no further than as it ministered to his glory, and the feeding his sheep, John 21:15. Peter, to whom Christ gave this charge (and thrice repeating it, as if to intimate the importance of it), in his last exercises of his Apostleship, dwelt upon it very sweetly; The elders which are among you, (said he), I exhort, who am also an elder, and a witness of the sufferings of Christ, and also a partaker of the glory that shall be revealed; feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre, but of a ready mind; neither as being lords over God's heritage, but being ensamples to the flock. And when the Chief Shepherd shall appear, ye shall receive a crown of glory that fadeth not away, 1 Peter 5:1.