Here the apostle does three things: -

I.He shows them their danger from an enemy more cruel and restless than even the worst of men, whom he describes,

1.By his characters and names. (1.) He is an adversary: "That adversary of yours; not a common adversary, but an enemy that impleads you, and litigates against you in your grand depending cause, and aims at your very souls." (2.) The devil, the grand accuser of all the brethren; this title is derived from a word which signifies to strike through, or to stab. He would strike malignity into our natures and poison into our souls. If he could have struck these people with passion and murmuring in their sufferings, perhaps he might have drawn them to apostasy and ruin. (3.) He is a roaring lion, hungry, fierce, strong, and cruel, the fierce and greedy pursuer of souls.

2.By his business: He walks about, seeking whom he may devour; his whole design is to devour and destroy souls. To this end he is unwearied and restless in his malicious endeavours; for he always, night and day, goes about studying and contriving whom he may ensnare to their eternal ruin.

II.Hence he infers that it is their duty, 1. To be sober, and to govern both the outward and the inward man by the rules of temperance, modesty, and mortification. 2. To be vigilant; not secure or careless, but rather suspicious of constant danger from this spiritual enemy, and, under that apprehension, to be watchful and diligent to prevent his designs and save our souls. 3. To resist him stedfast in the faith. It was the faith of these people that Satan aimed at; if he could overturn their faith, and draw them into apostasy, then he knew he should gain his point, and ruin their souls; therefore, to destroy their faith, he raises bitter persecutions, and sets the grand potentates of the world against them. This strong trial and temptation they must resist, by being well-grounded, resolute, and stedfast in the faith: to encourage them to this,

III.He tells them that their care was not singular, for they knew that the like afflictions befell their brethren in all parts of the world, and that all the people of God were their fellow-soldiers in this warfare. Learn, 1. All the great persecutions that ever were in the world were raised, spirited up, and conducted, by the devil; he is the grand persecutor, as well as the deceiver and accuser, of the brethren; men are his willing spiteful instruments, but he is the chief adversary that wars against Christ and his people, Gen 3:15; Rev 12:12. 2. The design of Satan in raising persecutions against the faithful servants of God is to bring them to apostasy, by reason of their sufferings, and so to destroy their souls. 3. Sobriety and watchfulness are necessary virtues at all times, but especially in times of suffering and persecution. "You must moderate your affection to worldly things, or else Satan will soon overcome you." 4. "If you would overcome Satan, as a tempter, an accuser, or a persecutor, you must resist him stedfast in the faith; if your faith give way, you are gone; therefore, above all, take the shield of faith," Eph 6:16. 5. The consideration of what others suffer is proper to encourage us to bear our own share in any affliction: The same afflictions are accomplished in your brethren.

Whom resist - Stand against him, αντιστητε. Though invulnerable, he is not unconquerable: the weakest follower of God can confound and overpower him, if he continue steadfast in the faith - believing on the Son of God, and walking uprightly before him. To a soul thus engaged he can do no damage.

The same afflictions are accomplished in your brethren - It is the lot of all the disciples of Christ to suffer persecution. The brotherhood, αδελφοτης, the Christian Church, everywhere is exposed to the assaults of men and devils; you are persecuted by the heathen among whom ye live, and from among whom ye are gathered into the fold of Christ: but even those who profess the same faith with you, and who are resident among the Jews, (for so I think εν κοσμῳ, in the world, is here to be understood), are also persecuted, both heathens and Jews being equally opposed to the pure and holy doctrines of the Gospel. Any man who has read the Greek Testament with any attention must have observed a vast number of places in which the word κοσμος, which we translate world, means the Jewish people and the Jewish state, and nothing else.

Whom resist,.... By no means give way to him, by indulging any sin, or yielding to any temptation, but oppose him, and stand against his wiles, his cunning and his power:

steadfast in the faith; both in the doctrine of faith, which Satan endeavours to remove from, or cause to stagger in; and in the grace of faith, exercising it on the promises of God, and his perfections, particularly his power and faithfulness concerned in them, and in the blood, righteousness, sacrifice, and person of Christ, which faith is capable of making use of, as a shield, to good purpose, against all the fiery darts of Satan; as also in a profession of faith, which, as it should be held fast without wavering, and which the devil is very busy to keep persons from making, or to cause them to drop it when they have made it, by violent suggestions, strong temptations, and a flood of reproaches and persecutions; all which should be disregarded:

knowing that the same afflictions are accomplished in your brethren that are in the world; and therefore should not be surprised and staggered by them, nor think them strange, but endure them without murmuring, and with patience and cheerfulness; since they are the "same afflictions" and trials which others have been exercised with in all ages: the same which the fraternity, or "brotherhood", as the word signifies, see Pe1 2:17 who stand in the same relation to God and Christ as they do, endure; yea, the same which Christ himself, who stands in this relation to them, has endured: and which must be expected while they are "in the world"; but this is the great mercy, that they are only endured in this world; there will be none in the world to come; they will be "accomplished" and finished here; and every believer has his measure, which must be filled up; and so has the whole of Christ, his church, and when they are fulfil they will be no more.

(Luk 4:13; Eph 6:11-17; Jam 4:7.)

steadfast--Compare established in the truth," Pe2 1:12. Satan's power exists only in respect to the unbelieving; the faithful he cannot hurt (Jo1 5:18). Faith gives strength to prayer, the great instrument against the foe (Jam 1:6, &c.).

knowing, &c.--"encouragement not to faint in afflictions": your brethren suffer the same; nothing beyond the common lot of Christians befalls you (Co1 10:13). It is a sign of God's favor rather than displeasure, that Satan is allowed to harass you, as he did Job. Your fellow Christians have the same battle of faith and prayer against Satan.

are--are being accomplished according to the appointment of God.

in the world--lying in the wicked one, and therefore necessarily the scene of "tribulation" (Joh 16:33).