With meekness This is a most necessary admonition; for unless our minds are endued with meekness, contentions will immediately break forth. And meekness is set in opposition to pride and vain ostentation, and also to excessive zeal. To this he justly adds fear; for where reverence for God prevails, it tames all the ferocity of our minds, and it will especially cause us to speak calmly of God's mysteries. For contentious disputes arise from this, because many think less honourably than they ought of the greatness of divine wisdom, and are carried away by profane audacity. If, then, we would render approved of God the confession of our faith, all boasting must be put aside, all contention must be relinquished. Having a good conscience What we say without a corresponding life has but little weight; hence he joins to confession a good conscience. For we see that many are sufficiently ready with their tongue, and prate much, very freely, and yet with no fruit, because the life does not correspond. Besides, the integrity of conscience alone is that which gives us confidence in speaking as we ought; for they who prattle much about the gospel, and whose dissolute life is a proof of their impiety, not only make themselves objects of ridicule, but also expose the truth itself to the slanders of the ungodly. For why did he before bid us to be ready to defend the faith, should any one require from us a reason for it, except that it is our duty to vindicate the truth of God against those false suspicions which the ignorant entertain respecting it. But the defense of the tongue will avail but little, except the life corresponds with it. He therefore says, that they may be ashamed, who blame your good conversation in Christ, and who speak against you as evil-doers; as though he had said, "If your adversaries have nothing to allege against you, except that you follow Christ, they will at length be ashamed of their malicious wickedness, or at least, your innocence will be sufficient to confute them."

Having a good conscience - That is, a conscience that does not accuse you of having done wrong. Whatever may be the accusations of your enemies, so live that you may be at all times conscious of uprightness. Whatever you suffer, see that you do not suffer the pangs inflicted by a guilty conscience, the anguish of remorse. On the meaning of the word "conscience," see the notes at Romans 2:15. The word properly means the judgment of the mind respecting right and wrong; or the judgment which the mind passes on the immorality of its own actions, when it instantly approves or condemns them. There is always a feeling of obligation connected with operations of conscience, which precedes, attends, and follows our actions. "Conscience is first occupied in ascertaining our duty, before we proceed to action; then in judging of our actions when performed." A "good conscience" implies two things:
(1) That it be properly enlightened to know what is right and wrong, or that it be not under the dominion of ignorance, superstition, or fanaticism, prompting us to do what would be a violation of the divine law; and,
(2) that its dictates must always be obeyed. Without the first of these - clear views of that which is right and wrong - conscience becomes an unsafe guide; for it merely prompts us to do what we esteem to be right, and if our views of what is right and wrong are erroneous, we may be prompted to do what may be a direct violation of the law of God. Paul thought he "ought" to do many things contrary to the name of Jesus of Nazareth Acts 26:9; the Saviour said, respecting his disciples, that the time would come when whosoever should kill them would think that they were doing God service, John 16:2; and Solomon says, "There is a way which seemeth right unto a man, but the end thereof are the ways of death," Proverbs 14:12; Proverbs 16:25 Under an unenlightened and misguided conscience, with the plea and pretext of religion, the most atrocious crimes have been committed; and no man should infer that he is certainly doing right, because he follows the promptings of conscience.
No man, indeed, should act against the dictates of his conscience; but there may have been a previous wrong in not using proper means to ascertain what is right. Conscience is not revelation, nor does it answer the purpose of a revelation. It communicates no new truth to the soul, and is a safe guide only so far as the mind has been properly enlightened to see what is truth and duty. Its office is "to prompt us to the performance of duty," not "to determine what is right." The other thing requisite that we may have a good conscience is, that its decisions should be obeyed. Conscience is appointed to be the "vicegerent" of God in inflicting punishment, if his commands are not obeyed. It pronounces a sentence on our own conduct. Its penalty is remorse; and that penalty will be demanded if its promptings be not regarded. It is an admirable device, as a part of the moral government of God, urging man to the performance of duty, and, in case of disobedience, making the mind its own executioner.
There is no penalty that will more certainly be inflicted, sooner or later, than that incurred by a guilty conscience. It needs no witnesses; no process for arresting the offender; no array of judges and executioners; no stripes, imprisonment, or bonds. Its inflictions will follow the offender into the most secluded retreat; overtake him in his most rapid flight; find him out in northern snows, or on the sands of the equator; go into the most splendid palaces, and seek out the victim when he is safe from all the vengeance that man can inflict; pursue him into the dark valley of the shadow of death, or arrest him as a fugitive in distant worlds. No one, therefore, can over-estimate the importance of having a good conscience. A true Christian should aim, by incessant study and prayer, to know what is right, and then always do it, no matter what may be the consequences.
That, whereas they speak evil of you - They who are your enemies and persecutors. Christians are not to hope that people will always speak well of them, Matthew 5:11; Luke 6:26.
As of evildoers - See the notes at 1-Peter 2:12.
They may be ashamed - They may see that they have misunderstood your conduct, and regret that they have treated you as they have. We should expect, if we are faithful and true, that even our enemies will yet appreciate our motives, and do us justice. Compare Psalm 37:5-6.
That falsely accuse your good conversation in Christ - Your good conduct as Christians. They may accuse you of insincerity, hypocrisy, dishonesty; of being enemies of the state, or of monstrous crimes; but the time will come when they will see their error, and do you justice. See the notes at 1-Peter 2:12.

Having a good conscience - The testimony of God in your own soul, that in simplicity and godly sincerity you have your conversation in the world. See on the term conscience at the end of Hebrews.
Whereas they speak evil of you - See the same sentiment in 1-Peter 2:11 and the note there.

Having a good conscience,.... Meaning not the faculty of the conscience itself, which is naturally evil, and defiled with sin, and is only made good by the sanctification of the Spirit, and the sprinkling of the blood of Jesus, by which the heart is sprinkled from it, and that itself purged from dead works; but a life and conversation according to the dictates of such a conscience, in the uprightness and sincerity of it, and by the grace of God, and according to the Gospel, and whereby the doctrines of it are adorned; for, as besides internal sanctification of God, or a fearing of him, and believing in him with the heart, there must be a profession of him with the mouth, and a reason of faith and hope given verbally, when there is an occasion for it; so to both must be added a conscientious discharge of duty, both to God and men, which is one way of defending and recommending the doctrines of the Gospel:
that whereas they speak evil of you as of evildoers; as vain, proud, haughty, and arrogant persons, as seditious men, enemies to order and civil magistracy; as such that speak evil of dignities, and despise government; when they shall see your modest and humble deportment in the world, and before them, and with what reverence and esteem you treat them:
they may be ashamed that falsely accuse your good conversation in Christ; which was in consequence of their being in Christ, and made new creatures by him, and was as became his Gospel, and by and under the influence of his grace and Spirit.

Having a good conscience--the secret spring of readiness to give account of our hope. So hope and good conscience go together in Acts 24:15-16. Profession without practice has no weight. But those who have a good conscience can afford to give an account of their hope "with meekness."
whereas-- (1-Peter 2:12).
they speak evil of you, as of evildoers--One oldest manuscript reads, "ye are spoken against," omitting the rest.
falsely accuse--"calumniate"; the Greek expresses malice shown in deeds as well as in words. It is translated, "despitefully use," Matthew 5:44; Luke 6:28.
conversation--life, conduct.
in Christ--who is the very element of your life as Christians. "In Christ" defines "good." It is your good walk as Christians, not as citizens, that calls forth malice (1-Peter 4:4-5, 1-Peter 4:14).

Having a good conscience - So much the more beware of anger, to which the very consciousness of your innocence may betray you. Join with a good conscience meekness and fear, and you obtain a complete victory. Your good conversation in Christ - That is, which flows from faith in him.