3:22-26 Here is a powerful address to warn the Jews of the dreadful consequences of their unbelief, in the very words of Moses, their favourite prophet, out of pretended zeal for whom they were ready to reject Christianity, and to try to destroy it. Christ came into the world to bring a blessing with him. And he sent his Spirit to be the great blessing. Christ came to bless us, by turning us from our iniquities, and saving us from our sins. We, by nature cleave to sin; the design of Divine grace is to turn us from it, that we may not only forsake, but hate it. Let none think that they can be happy by continuing in sin, when God declares that the blessing is in being turned from all iniquity. Let none think that they understand or believe the gospel, who only seek deliverance from the punishment of sin, but do not expect happiness in being delivered from sin itself. And let none expect to be turned from their sin, except by believing in, and receiving Christ the Son of God, as their wisdom, righteousness, sanctification, and redemption.

22-26. a prophet … like unto me—particularly in intimacy of communication with God (Nu 12:6-8), and as the mediatorial Head of a new order of things (Heb 3:2-6). Peter takes it for granted that, in the light of all he had just said, it would be seen at once that One only had any claim to be that Prophet.

him shall ye hear in all things, &c.—This part of the prediction is emphatically added, in order to shut up the audience to the obedience of faith, on pain of being finally "cut off" from the congregation of the righteous (Ps 1:1).