16:21-23 Christ reveals his mind to his people gradually. From that time, when the apostles had made the full confession of Christ, that he was the Son of God, he began to show them of his sufferings. He spake this to set right the mistakes of his disciples about the outward pomp and power of his kingdom. Those that follow Christ, must not expect great or high things in this world. Peter would have Christ to dread suffering as much as he did; but we mistake, if we measure Christ's love and patience by our own. We do not read of any thing said or done by any of his disciples, at any time, that Christ resented so much as this. Whoever takes us from that which is good, and would make us fear to do too much for God, speaks Satan's language. Whatever appears to be a temptation to sin, must be resisted with abhorrence, and not be parleyed with. Those that decline suffering for Christ, savour more of the things of man than of the things of God.

23. But he turned, and said—in the hearing of the rest; for Mark (Mr 8:33) expressly says, "When He had turned about and looked on His disciples, He rebuked Peter"; perceiving that he had but boldly uttered what others felt, and that the check was needed by them also.

Get thee behind me, Satan—the same words as He had addressed to the Tempter (Lu 4:8); for He felt in it a satanic lure, a whisper from hell, to move Him from His purpose to suffer. So He shook off the Serpent, then coiling around Him, and "felt no harm" (Ac 28:5). How quickly has the "rock" turned to a devil! The fruit of divine teaching the Lord delighted to honor in Peter; but the mouthpiece of hell, which he had in a moment of forgetfulness become, the Lord shook off with horror.

thou art an offence—a stumbling-block.

unto me—"Thou playest the Tempter, casting a stumbling-block in My way to the Cross. Could it succeed, where wert thou? and how should the Serpent's head be bruised?"

for thou savourest not—thou thinkest not.

the things that be of God, but those that be of men—"Thou art carried away by human views of the way of setting up Messiah's kingdom, quite contrary to those of God." This was kindly said, not to take off the sharp edge of the rebuke, but to explain and justify it, as it was evident Peter knew not what was in the bosom of his rash speech.