And I will give unto thee the keys of the kingdom of heaven,.... By the kingdom of heaven is meant the Gospel, which comes from heaven, declares the king Messiah to be come, speaks of things concerning his kingdom, is the means of setting it up, and enlarging it, displays the riches of his grace, and gives an account of the kingdom of heaven, and of persons' right unto it, and meetness for it. "The keys" of it are abilities to open and explain the Gospel truths, and a mission and commission from Christ to make use of them; and being said to be given to Peter particularly, denotes his after qualifications, commission, work, and usefulness in opening the door of faith, or preaching the Gospel first to the Jews, Acts 2:1 and then to the Gentiles, Acts 10:1 and who was the first that made use of the keys of evangelical knowledge with respect to both, after he, with the rest of the apostles, had received an enlarged commission to preach the Gospel to all nations, beginning at Jerusalem. Otherwise these keys belonged to them all alike; for to the same persons the keys, and the use of them, appertained, on whom the power of binding and loosing was bestowed; and this latter all the disciples had, as is manifest from Matthew 18:18 wherefore this does not serve to establish the primacy and power of Peter over the rest of the apostles; nor do keys design any lordly domination or authority; nor did Christ allow of any such among his apostles; nor is it his will that the ministers of his word should lord it over his heritage: he only is king of saints, and head of his church; he has the key of David, with which he opens, and no man shuts, and shuts, and no man opens; and this he keeps in his own hand, and gives it to none.
Peter is not the door-keeper of heaven to let in, nor keep out, whom he pleases; nor has his pretended successor the keys of hell and death; these also are only in Christ's hands: though it has been said of the pope of Rome, that if he sends millions of men to hell, none should say to him, what dost thou? but the keys here mentioned are the keys of the kingdom of heaven; or of the Gospel, which was shut up in the Jewish nation, through the ignorance, malice, and calumnies of the Scribes and Pharisees, who would neither embrace it, or enter into the kingdom of God themselves, nor suffer others that were going to enter into it; and through their taking away the key of knowledge, or the right interpretation of the word of God; and through a judicial blindness, which that nation in general was given up to: and this was shut up to the Gentiles through the natural darkness that was spread over them, and through want of a divine revelation, and persons sent of God to instruct them: but now Christ was about, and in a little time he would (for these words, with what follow, are in the future tense) give his apostles both a commission and gifts, qualifying them to open the sealed book of the Gospel, and unlock the mysteries of it, both to Jews and Gentiles, especially the latter. Keys are the ensigns of treasurers, and of stewards, and such the ministers of the Gospel are; they have the rich treasure of the word under their care, put into their earthen vessels to open and lay before others; and they are stewards of the mysteries and manifold grace of God, and of these things they have the keys. So that these words have nothing to do with church power and government in Peter, nor in the pope, nor in any other man, or set of men whatever; nor to be understood of church censures, excommunications, admissions, or exclusions of members: nor indeed are keys of any such similar use; they serve for locking and unlocking doors, and so for keeping out those that are without, and retaining those that are within, but not for the expulsion of any: but here they are used in a figurative sense, for the opening and explaining the truths of the Gospel, for which Peter had excellent gifts and abilities.