Matthew 16:18

And I say also unto thee
Either besides what he had already said concerning his happiness; or, as the father had revealed something great and valuable, so likewise would he; or inasmuch as he had freely said and declared who, and what he was, in like manner he also would say what Peter was, thou art Peter: intimating, that he was rightly called Peter, or Cephas, by him, when he first became a follower of him, ( Matthew 4:18 ) ( John 1:42 ) , which words signify the same thing, a rock, or stone; because of his firmness and solidity, and because he was laid upon the sure foundation, and built on the rock Christ, and was a very fit stone to be laid in the spiritual building. The aptness of this name to him is easy to be seen in his full assurance of faith, as to the person of Christ, and his free, open, and undaunted confession of him.

And upon this rock will I build my church:
by the church, is meant, not an edifice of wood, stones but an assembly, and congregation of men; and that not of any sort; not a disorderly, tumultuous assembly, in which sense this word is sometimes taken; nor does it design the faithful of a family, which is sometimes the import of it; nor a particular congregated church, but the elect of God, the general assembly and church of the first born, whose names are written in heaven; and especially such of them as were to be gathered in, and built on Christ, from among the Jews and Gentiles. The materials of this building are such, as are by nature no better, or more fit for it, than others: these stones originally lie in the same quarry with others; they are singled out, and separated from the rest, according to the sovereign will of God, by powerful and efficacious grace; and are broken and hewn by the Spirit of God, generally speaking, under the ministry of the word, and are, by him, made living stones; and being holy and spiritual persons, are built up a spiritual house: and these are the only persons which make up the true and invisible church of Christ in the issue, and are only fit to be members of the visible church; and all such ought to be in a Gospel church state, and partake of the privileges of it: these materials are of different sorts, and have a different place, and have a different usefulness in this building; some are only as common stones, and timber; others are as pillars, beams, and rafters; and all are useful and serviceable; and being put, and knit together, grow up as an holy temple to the Lord: and are called, by Christ, "my" church, because given him by the Father; and he has purchased them with his own blood; are built by him, and on him; inhabited by him, and of whom he is the head, king, and governor; though not to the exclusion of the Father, whose house they also are; nor of the Spirit, who dwells in them, as in his temple. This church Christ promises to "build". Though his ministers are builders, they are but under builders; they are qualified, employed, directed, encouraged, and succeeded by him; he is the wise, able, and chief master builder. This act of building seems to have a special regard to the conversion of God's elect, both among Jews and Gentiles, particularly the latter; and to the daily conversions of them in all ages; and to the building up of saints in faith and holiness; each of which will more manifestly appear in the latter day; and are both generally effected through the word, and ordinances, as means, the Spirit of Christ blessing them. By the rock on which Christ builds his church, is meant, not the person of Peter; for Christ does not say, upon thee Peter, but upon this rock, referring to something distinct from him: for though his name signifies a rock, or stone, and there may be some allusion to it; and he is so called because of his trust and confidence in the Lord, on whom he was built; but not because he was the foundation on which any others, and especially the whole church, were built: it is true, he may be called the foundation, as the rest of the twelve apostles of the Lamb are, ( Ephesians 2:20 ) ( Revelation 21:14 ) without any distinction from them, and preference to them; they and he agreeing in laying doctrinally and ministerially Christ Jesus as the foundation of faith and hope, but not in such sense as he is; neither he, nor they, are the foundation on which the church is built, which is Christ, and him only. Moreover, what is said to Peter in these, and the following words, is not said to him personally and separately from the rest of the apostles, but is designed for them, as well as him, as appears by comparing them with ( Matthew 18:18 ) . As he spoke in the name of them all, to Christ; so Christ spake to him, including them all. Peter had no preeminence over the rest of the apostles, which he neither assumed, nor was it granted; nor would it ever have been connived at by Christ, who often showed his resentment at such a spirit and conduct, whenever there was any appearance of it in any of them; see ( Matthew 18:1-3 ) ( 20:25-28