1 Peter 4:1

Because he who has suffered in the flesh has ceased from sins, etc. Whoever among the saints has subjected his body to martyrdom under the violence of persecutors, there is no doubt that, as much as possible given human nature, he has abstained from sins …

"Having suffered" instead of "having died." Peter speaks similarly to Paul: "if we died with Him, we shall also live with Him" (2 Tim. 2:11); and: "reckon yourselves to be dead indeed to sin, but alive to God" (Rom. 6:11).

"With the same mind" means: with the same impulse, with the same purpose. For the preposition κατά is missing, because it is stated with an omission. Having spoken of the economy of salvation, of the Lord's descent into Hades, and of the reason He descended …

Arm yourselves with the same mind - Which will be armour of proof against all your enemies. For he that hath suffered in the flesh - That hath so suffered as to be thereby made inwardly and truly conformable to the sufferings of Christ. Hath ceased from sin - Is delivered from it.

Forasmuch then as Christ hath suffered for us in the flesh.....

Some of the strongest and best arguments against all sorts of sin are taken from the sufferings of Christ. All sympathy and tenderness for Christ as a sufferer are lost of you do not put away sin.

Forasmuch then as Christ hath suffered for us in the flesh - Since he as a man has died for us. See the notes at 1Pe 3:18. The design was to set the suffering Redeemer before them as an example in their trials. Arm yourselves likewise with the same mind - That is, evidently, the same mind that he evinced - a readiness to suffer in the cause of religion, a readiness to die as he had done. This readiness to suffer and die, the apostle speaks of as armour, and having this is represented as being armed.

The Christian is by faith one with Christ: as then Christ by death is judicially freed from sin; so the Christian who has in the person of Christ died, has no more to do with it judicially, and ought to have no more to do with it actually. "The flesh" is the sphere in which sin has place.

Our Lord Jesus Christ has suffered for sin and He has suffered to the utmost extent, for He has paid the death penalty on His people's behalf. Look at the 18th verse of the previous chapter—"For Christ also has once suffered for sins, the Just for the unjust, that He might bring us to God, being put to death in the flesh, but quickened by the Spirit." Christ has fought with sin to the bitter end. He has now done with sin, for He has died to it. He has borne the capital sentence pronounced upon the guilty, dying, "the Just for the unjust, that He might bring us to God." Now, as many as have believed in the Lord Jesus Christ are one with Him. And what He did, He did representatively for them, so that they virtually did it in Him. Therefore, every Believer ought to regard Himself as having been put to death on account of sin—as having undergone, in the Person of His Great Substitute, the capital sentence on account of sin and now, as a man who has been executed is clear of the guilt, so are we! And as a man who has been executed should not return, could he live again, under the old sin, so neither must we. "Christ being raised from the dead dies no more; death has no more dominion over Him. For in that He died, He died unto sin once: but in that He lives, He lives unto God. Likewise reckon you, also, yourselves, to be dead, indeed, unto sin, but alive unto God through Jesus Christ our Lord." Now read between the lines of our text. In Christ we have died unto sin once, but now that we live unto God, we are as if we had actually died to sin and had passed into a new state and condition by virtue of our union with Jesus Christ our Lord.

Our Lord Jesus Christ has suffered for sin and He has suffered to the utmost extent, for He has paid the death penalty on His people's behalf. Look at the 18th verse of the previous chapter—"For Christ also has once suffered for sins, the Just for the unjust, that He might bring us to God, being put to death in the flesh, but quickened by the Spirit." Christ has fought with sin to the bitter end. He has now done with sin, for He has died to it.

As Christ hath suffered - He is your proper pattern; have the same disposition he had; the same forgiving spirit, with meekness, gentleness, and complete self-possession. He that hath suffered in the flesh, hath ceased from sin - This is a general maxim, if understood literally: The man who suffers generally reflects on his ways, is humbled, fears approaching death, loathes himself because of his past iniquities, and ceases from them; for, in a state of suffering, the mind loses its relish for the sins of the flesh, because they are embittered to him through the apprehension which he has of death and judgment; and, on his application to God’s mercy, he is delivered from his sin. Some suppose the words are to be understood thus: “Those who have firmly resolved, if called to it, to suffer death rather than apostatize from Christianity, have consequently ceased from, or are delivered from, the sin of saving their lives at the expense of their faith.” Others think that it is a parallel passage to Rom 6:7, and interpret it thus: “He that hath mortified the flesh, hath ceased from sin.” Dr. Bentley applies the whole to our redemption by Christ: He that hath suffered in the flesh hath died for our sins. But this seems a very constrained sense.