(16) Thou art the Christ, the Son of the living God.--The variations in the other Gospels--St. Mark giving simply, "Thou art the Christ," and St. Luke, "The Christ of God"--are interesting in their bearing on the question of literal inspiration, but do not affect the meaning; and the fullest of the three reports may be received without hesitation as the most authentic. The confession was made by Peter, partly, we may believe, as the representative of the others, partly, as the special promise that follows implies, from the personal fervour of his character. He believed himself, and had impressed his faith on them. His words reproduced the confession of John 6:69, even verbally, if we follow the received text, but the better MSS. of that Gospel have a different reading: "Thou art the Holy One of God." In any form they recognised to the full our Lord's character as the Christ; they identified Him with the Son of Man in Daniel's vision, and, more than this, they recognised in that Son of Man one who was also not "a son" only, but, in some high incommunicable sense, "the Son of the living God."

Verse 16. - Simon Peter answered and said. The ardent Peter, when all were asked, replies in the name of the rest, giving, however, his own personal sentiment and belief, as we see from Christ's answer (ver. 17). Some of the others probably would have been less ready to make the same confession; but in his vehement loyalty, Peter silences all hesitation, and declares boldly what must be the conviction of all his comrades. He speaks out the persuasion wrought in his soul by Divine grace. Thou art the Christ (ὁ Ξριστὸς), the Son of the living God. The Christ; the Anointed, the Messiah. The Son of God; of the same substance, one with the Father. Living; as alone "having life in himself," "the living and true God" (John 5:26; 1 Thessalonians 1:9). The same (or nearly the same) confession was made by Peter in the name of all the apostles at Capernaum (John 6:69); but the sense of the expression was different, and sprang from very different conviction. It referred rather to the subjective view of Christ's character, as it influenced the believer's inward assurance of the source of eternal life. Here the acknowledgment concerns the nature, office, and Person of our Lord. That there was some special distinction between the two enunciations is evident from Christ's unique commendation of Peter on this occasion compared with his silence on the former. The present confession is indeed a noble one, containing itself a compendium of the Catholic faith concerning the Person and work of Christ. Herein Peter acknowledges Jesus to be the true Messiah, commissioned and sent by God to reveal his will to man, and accomplishing all that the prophets had foretold concerning him; no mere man, not even the most exalted of men (which common opinion held Messiah to be) but the Son of God, of the substance of the Father, begotten from everlasting, God of God, perfect God and perfect man, Son of God and Son of man. Such was Peter's faith. The Church has added nothing to it, though she has amplified and explained and illustrated it in her Creeds; for it comprises belief in Christ's Messiahship, Divinity, Incarnation, personality, and the momentous issues depending thereon. We need not suppose that Peter understood all this or speculated on the question how these several attributes were united in Christ. He was content to accept and acknowledge the truth, waiting patiently for further light. This is the attitude which Christ approves.

16:13-20 Peter, for himself and his brethren, said that they were assured of our Lord's being the promised Messiah, the Son of the living God. This showed that they believed Jesus to be more than man. Our Lord declared Peter to be blessed, as the teaching of God made him differ from his unbelieving countrymen. Christ added that he had named him Peter, in allusion to his stability or firmness in professing the truth. The word translated rock, is not the same word as Peter, but is of a similar meaning. Nothing can be more wrong than to suppose that Christ meant the person of Peter was the rock. Without doubt Christ himself is the Rock, the tried foundation of the church; and woe to him that attempts to lay any other! Peter's confession is this rock as to doctrine. If Jesus be not the Christ, those that own him are not of the church, but deceivers and deceived. Our Lord next declared the authority with which Peter would be invested. He spoke in the name of his brethren, and this related to them as well as to him. They had no certain knowledge of the characters of men, and were liable to mistakes and sins in their own conduct; but they were kept from error in stating the way of acceptance and salvation, the rule of obedience, the believer's character and experience, and the final doom of unbelievers and hypocrites. In such matters their decision was right, and it was confirmed in heaven. But all pretensions of any man, either to absolve or retain men's sins, are blasphemous and absurd. None can forgive sins but God only. And this binding and loosing, in the common language of the Jews, signified to forbid and to allow, or to teach what is lawful or unlawful.And Simon Peter answered and said,.... Either of his own accord, and for himself, being a warm, zealous, and forward man; one that dearly loved Christ, truly believed in him, and was ready to make a confession of him; or, as the mouth of the rest, in their name, and with their consent; or, at least, as full well knowing the sentiments of their minds. Thou art Christ, the Son of the living God: a short, but a very full confession of faith, containing the following articles: as that there is a God, that there is but one God; that he is the living God, has life in himself, is the fountain of life to others, and by this is distinguishable from the idols of the Gentiles: that Jesus is the Christ, the Christ of God, the true Messiah, that was promised by God, prophesied of by all the prophets, from the beginning of the world, and expected by the people of God: a character that includes all his offices, of prophet, priest, and king, to which he is anointed by God; and that this Messiah was not a mere man, but a divine person, the Son of God; not by creation, as angels and men are, nor by adoption, as saints, nor by office, as magistrates, but by nature, being his own Son, his proper Son, the only begotten of the Father, of the same nature with him, being one with him, and equal to him. This confession, as it is uniform, and all of a piece, and consistent with itself, and is what all the disciples of Christ agreed in, so it greatly exceeds the most that can be made of the different sentiments of the people put together. They took him, one and all, to be but a mere man; their most exalted thoughts of him rose no higher: but in this he is acknowledged to be the Son of God, a phrase expressive of his divine nature, and distinct personality: they thought him to be a dead man brought to life; but here he is called the Son of the living God, as having the same life in him the Father has: they indeed judged him to be a prophet, but not that prophet that was to come, superior to all prophets; but here he is owned to be the Christ, which not only takes in his prophetic office in a higher sense than they understood it, but all his other offices, and declares him to be the promised Messiah; which they who thought, and spoke the most honourably of him, could not allow of.