Hence Peter adds, But if ye suffer for righteousness' sake The meaning is, that the faithful will do more towards obtaining a quiet life by kindness, than by violence and promptitude in taking revenge; but that when they neglect nothing to secure peace, were they to suffer, they are still blessed, because they suffer for the sake of righteousness. Indeed, this latter clause differs much from the judgment of our flesh; but Christ has not without reason thus declared; nor has Peter without reason repeated the sentence from his mouth; for God will at length come as a deliverer, and then openly will appear what now seems incredible, that is, that the miseries of the godly have been blessed when endured with patience. To suffer for righteousness, means not only to submit to some loss or disadvantage in defending a good cause, but also to suffer unjustly, when any one is innocently in fear among men on account of the fear of God. Be not afraid of their terror He again points out the fountain and cause of impatience, that we are beyond due measure troubled, when the ungodly rise up against us. For such a dread either disheartens us, or degrades us, or kindles within us a desire for revenge. In the meantime, we do not acquiesce in the defense of God. Then the best remedy for checking the turbulent emotions of our minds will be, to conquer immoderate terrors by trusting in the aid of God. But Peter no doubt meant to allude to a passage in the eighth chapter of Isaiah; [Isaiah 8:12-17;] for when the Jews against the prohibition of God sought to fortify themselves by the aid of the Gentile world, God warned his Prophet not to fear after their example. Peter at the same time seems to have turned "fear" into a different meaning; for it is taken passively by the Prophet, who accused the people of unbelief, because, at a time when they ought to have relied on the aid of God and to have boldly despised all dangers, they became so prostrate and broken down with fear, that they sent to all around them for unlawful help. But Peter takes fear in another sense, as meaning that terror which the ungodly are wont to fill us with by their violence and cruel threatenings. He then departs from the sense in which the word is taken by the Prophet; but in this there is nothing unreasonable; for his object was not to explain the words of the Prophet; he wished only to shew that, nothing is fitter to produce patience than what Isaiah prescribes, even to ascribe to God his honor by recumbing in full confidence on his power. I do not, however, object, if any one prefers to render Peter's words thus, Fear ye not their fear; as though he had said, "Be ye not afraid as the unbelieving, or the children of this world are wont to be, because they understand nothing of God's providence." But this, as I think, would be a forced explanation. There is, indeed, no need for us to toil much on this point, since Peter here did not intend to explain every word used by the Prophet, but only referred to this one thing, that the faithful will firmly stand, and can never be moved from a right course of duty by any dread or fear, if they will sanctify the Lord. But this sanctification ought to be confined to the present case. For whence is it that we are overwhelmed with fear, and think ourselves lost, when danger is impending, except that we ascribe to mortal man more power to injure us than to God to save us? God promises that he will be the guardian of our salvation; the ungodly, on the other hand, attempt to subvert it. Unless God's promise sustain us, do we not deal unjustly with him, and in a manner profane him? Then the Prophet teaches us that we ought to think honourably of the Lord of hosts; for how much soever the ungodly may contrive to destroy us, and whatever power they may possess, he alone is more than sufficiently powerful to secure our safety. [1] Peter then adds, in your hearts. For if this conviction takes full possession of our minds, that the help promised by the Lord is sufficient for us, we shall be well fortified to repel all the fears of unbelief.

Footnotes

1 - "Sanctify" here, seems to have the same meaning as in our Lord's prayer, "Hallowed," or sanctified "be thy name;" where it means honored or glorified. And to honor or glorify God in our hearts is what Calvin very correctly explains. -- Ed.

But and if ye suffer for righteousness" sake - Implying that though, in general, a holy character would constitute safety, yet that there was a possibility that they might suffer persecution. Compare the Matthew 5:10 note; 2-Timothy 3:12 note.
Happy are ye - Perhaps alluding to what the Saviour says in Matthew 5:10; "Blessed are they which are persecuted for righteousness" sake." On the meaning of the word happy or blessed, see the notes at Matthew 5:3. The meaning here is, not that they would find positive enjoyment in persecution on account of righteousness, but that they were to regard it as a blessed condition; that is, as a condition that might be favorable to salvation; and they were not therefore, on the whole, to regard it as an evil.
And be not afraid of their terror - Of anything which they can do to cause terror. There is evidently an allusion here to Isaiah 8:12-13; "Neither fear ye their fear, nor be afraid. Sanctify the Lord of hosts himself; and let him be your fear, and let him be your dread." See the notes at that passage. Compare Isaiah 51:12; Matthew 10:28. "Neither be troubled." With apprehension of danger. Compare the notes at John 14:1. If we are true Christians, we have really no reason to be alarmed in view of anything that can happen to us. God is our protector, and he is abundantly able to vanquish all our foes; to uphold us in all our trials; to conduct us through the valley of death, and to bring us to heaven. "All things are yours; whether Paul, or Apollos, or Cephas, or the world, or life, or death, or things present, or things to come," 1-Corinthians 3:21-22.

But and if ye suffer - God may permit you to be tried and persecuted for righteousness' sake, but this cannot essentially harm you; he will press even this into your service, and make it work for your good.
Happy are ye - This seems to refer to Matthew 5:10, etc. Blessed or happy, are ye when men persecute you, etc. It is a happiness to suffer for Christ; and it is a happiness, because if a man were not holy and righteous the world would not persecute him, so he is happy in the very cause of his sufferings.
Be not afraid of their terror - Τον δε φοβον αυτων μη φοβηθητε· Fear not their fear; see Isaiah 8:12. Sometimes fear is put for the object of a man's religious worship; see Genesis 31:42; Proverbs 1:26, and the place in Isaiah just quoted. The exhortation may mean, Fear not their gods, they can do you no hurt; and supposing that they curse you by them, yet be not troubled; "He who fears God need have no other fear."

But and if ye suffer for righteousness' sake, happy [are ye]: (15) and be not afraid of their (k) terror, neither be troubled;
(15) A most certain counsel in afflictions, be they never so terrible, to be of a steady mind and to stand fast. But how shall we attain to it? If we sanctify God in our minds and hearts, that is to say, if we rest upon him as one that is almighty that loves mankind, that is good and true indeed.
(k) Be not dismayed as they are.

But and if ye suffer for righteousness sake,.... For the doctrine of justification by the righteousness of Christ, which was the great stumbling block to the Jews, and on account of which they persecuted the Christians; it being not after man, nor according to the carnal reason of men, and was contrary to the method they had fixed on, and what excluded boasting in them, and was thought to be a licentious doctrine; and for a righteous cause, for professing Christ and his Gospel; for vindicating both which, whoever did must expect to suffer persecution; and also for living soberly, righteously, and godly; for by a religious life and conversation the saints are separated from the world, and are distinguished from them, which in effect sets a mark of infamy and reproach upon them; and saints, by an agreeable life, reprove others, and condemn them; all which irritate and provoke them to hate and persecute them: now these words prevent an objection that might be made to what is before said; that none can, or will harm such as are followers of good; whereas it is a clear case, that saints for righteousness sake are hurt, and do suffer in their persons, characters, and estate; they are reproached and reviled, and often suffer confiscation of goods, imprisonment, and even death itself; to which the apostle answers, by granting it, and supposing that this should be the case, as it sometimes is; yet no hurt is done them, they are still happy persons: happy are ye; since suffering on such an account is a gift of God, even as believing in Christ itself is, and is a real honour done to a person, and to be so accounted; moreover, such generally enjoy much of the presence of God, and the comforts of his Spirit; the Spirit of God and of glory rests upon them; hereby the graces of the Spirit of God in them are exercised, tried, and proved, and shine out the brighter; the faith and hope of other Christians are strengthened, and God is glorified; and besides, the kingdom of heaven, the crown of life, and eternal glory, with which their sufferings are not to be compared, are theirs, and which they shall certainly enjoy: and be not afraid of their terror, neither be troubled; referring to a passage in Isaiah 8:12 and the meaning is either, be not afraid with the same sort of fear as wicked men are; with a worldly slavish fear of men, and of the loss of worldly things, and of life itself: or, afraid of them, as the Syriac version renders it; who inject fear into you; do not be afraid of their revilings and reproaches, of their threatenings and menaces, and even of death itself by them, which is the utmost they can do; do not be troubled at anything they say or do to you; since nothing can harm you, since God is on your side, Christ has delivered you from this present evil world, and saved you out of the hands of every enemy; and since the love of God, which casteth out fear, is shed abroad in your hearts, and you are encompassed with it, and nothing can separate you from it.

We sanctify God before others, when our conduct invites and encourages them to glorify and honour him. What was the ground and reason of their hope? We should be able to defend our religion with meekness, in the fear of God. There is no room for any other fears where this great fear is; it disturbs not. The conscience is good, when it does its office well. That person is in a sad condition on whom sin and suffering meet: sin makes suffering extreme, comfortless, and destructive. Surely it is better to suffer for well-doing than for evil-doing, whatever our natural impatience at times may suggest. The example of Christ is an argument for patience under sufferings. In the case of our Lord's suffering, he that knew no sin, suffered instead of those who knew no righteousness. The blessed end and design of our Lord's sufferings were, to reconcile us to God, and to bring us to eternal glory. He was put to death in respect of his human nature, but was quickened and raised by the power of the Holy Spirit. If Christ could not be freed from sufferings, why should Christians think to be so? God takes exact notice of the means and advantages people in all ages have had. As to the old world, Christ sent his Spirit; gave warning by Noah. But though the patience of God waits long, it will cease at last. And the spirits of disobedient sinners, as soon as they are out of their bodies, are committed to the prison of hell, where those that despised Noah's warning now are, and from whence there is no redemption. Noah's salvation in the ark upon the water, which carried him above the floods, set forth the salvation of all true believers. That temporal salvation by the ark was a type of the eternal salvation of believers by baptism of the Holy Spirit. To prevent mistakes, the apostle declares what he means by saving baptism; not the outward ceremony of washing with water, which, in itself, does no more than put away the filth of the flesh, but that baptism, of which the baptismal water formed the sign. Not the outward ordinance, but when a man, by the regeneration of the Spirit, was enabled to repent and profess faith, and purpose a new life, uprightly, and as in the presence of God. Let us beware that we rest not upon outward forms. Let us learn to look on the ordinances of God spiritually, and to inquire after the spiritual effect and working of them on our consciences. We would willingly have all religion reduced to outward things. But many who were baptized, and constantly attended the ordinances, have remained without Christ, died in their sins, and are now past recovery. Rest not then till thou art cleansed by the Spirit of Christ and the blood of Christ. His resurrection from the dead is that whereby we are assured of purifying and peace.

But and if--"But if even." "The promises of this life extend only so far as it is expedient for us that they should be fulfilled" [CALVIN]. So he proceeds to state the exceptions to the promise (1-Peter 3:10), and how the truly wise will behave in such exceptional cases. "If ye should suffer"; if it should so happen; "suffer," a milder word than harm.
for righteousness--"not the suffering, but the cause for which one suffers, makes the martyr" [AUGUSTINE].
happy--Not even can suffering take away your blessedness, but rather promotes it.
and--Greek, "but." Do not impair your blessing (1-Peter 3:9) by fearing man's terror in your times of adversity. Literally, "Be not terrified with their terror," that is, with that which they try to strike into you, and which strikes themselves when in adversity. This verse and 1-Peter 3:15 is quoted from Isaiah 8:12-13. God alone is to be feared; he that fears God has none else to fear.
neither be troubled--the threat of the law, Leviticus 26:36; Deuteronomy 28:65-66; in contrast to which the Gospel gives the believer a heart assured of God's favor, and therefore unruffled, amidst all adversities. Not only be not afraid, but be not even agitated.

But if ye should suffer - This is no harm to you, but a good. Fear ye not their fear - The very words of the Septuagint, Isaiah 8:12-13. Let not that fear be in you which the wicked feel.