| Barnes' Notes on the Bible The Christ of God - The "Anointed" of God. The "Messiah" appointed by God, and who had been long promised by him. See the notes at Matthew 1:1.
Clarke's Commentary on the BibleBut whom say ye that I am? - Whom do ye tell the people that I am? What do ye preach concerning me? See also on Matthew 16:14 (note); and see the observations at the end of this chapter, (note). The Christ of God - The Coptic and later Persic read, Thou art Christ God. After this comes in Peter's confession of our Lord, as related Matthew 16:16 (note), etc., where see the notes; and see also the observations of Granville Sharp, Esq., at the end of this chapter.
Gill's Exposition of the Entire BibleHe said unto them, but whom say ye that I am?.... Which was the main thing he had in view in this private conference; and in order to introduce which, he puts the former question: Peter answering: in the name of the rest of the disciples, they assenting to it: said, the Christ of God; The Persic version reads, "Christ God"; the Messiah, who is the Son of God, and God over all, blessed for ever. The Cambridge copy of Beza's reads, "the Christ, the Son of God". See Gill on Luke 2:26.
Vincent's Word StudiesYe Emphatic: "but ye, whom do ye say that Iam?" The Christ of God Each evangelist gives Peter's confession differently. Matthew, The Christ, the Son of the living God. Mark, The Christ. See on Matthew 16:15. On Christ, see on Matthew 1:1.
Geneva Study BibleHe said unto them, But whom say ye that I am? Peter answering said, The Christ of God.
People's New Testament 9:18-21 He was alone praying. Only Luke informs us of this, his disciples being present, when he asked the question, Whom say the people that I am? See notes on Peter's confession of faith, Mt 16:13-20 Mr 8:27-30.
Matthew Henry's Concise Commentary9:18-27 It is an unspeakable comfort that our Lord Jesus is God's Anointed; this signifies that he was both appointed to be the Messiah, and qualified for it. Jesus discourses concerning his own sufferings and death. And so far must his disciples be from thinking how to prevent his sufferings, that they must prepare for their own. We often meet with crosses in the way of duty; and though we must not pull them upon our own heads, yet, when they are laid for us, we must take them up, and carry them after Christ. It is well or ill with us, according as it is well or ill with our souls. The body cannot be happy, if the soul be miserable in the other world; but the soul may be happy, though the body is greatly afflicted and oppressed in this world. We must never be ashamed of Christ and his gospel. | 
