Follow peace, etc. Men are so born that they all seem to shun peace; for all study their own interest, seek their own ways, and care not to accommodate themselves to the ways of others. Unless then we strenuously labor to follow peace, we shall never retain it; for many things will happen daily affording occasion for discords. This is the reason why the Apostle bids us to follow peace, as though he had said, that it ought not only to be cultivated as far as it may be convenient to us, but that we ought to strive with all care to keep it among us. And this cannot be done unless we forget many offenses and exercise mutual forbearance. [1] As however peace cannot be maintained with the ungodly except on the condition of approving of their vices and wickedness, the Apostle immediately adds, that holiness is to be followed together with peace; as though he commended peace to us with this exception, that the friendship of the wicked is not to be allowed to defile or pollute us; for holiness has an especial regard to God. Though then the whole world were roused to a blazing war, yet holiness is not to be forsaken, for it is the bond of our union with God. In short, let us quietly cherish concord with men, but only, according to the proverb, as far as conscience allows. He declares, that without holiness no man shall see the Lord; for with no other eyes shall we see God than those which have been renewed after his image.

Footnotes

1 - It has been justly observed that dioko is to follow or pursue one fleeing away from us. It means not only to seek peace but strive to maintain it. Psalm 34, we have pursuing after seeking, "Seek peace and pursue it," i.e., strive earnestly to secure and retain it. Romans 12:18, is an explanation. But this strenuous effort as to peace is to be extended to holiness; not chastity, as Chrysostom and some other fathers have imagined, but holiness in its widest sense, purity of heart and life, universal holiness. The word hagiasmos is indeed taken in a limited sense, and rendered "sanctification" 1-Thessalonians 4:3, and it may be so rendered here as it is in those places where it evidently means holiness universally, 1-Corinthians 1:30; 2-Thessalonians 2:13, 1-Peter 1:2. The article is put before it in order to show its connection with what follows, "and the (or that) holiness, without which no one shall see the Lord." -- Ed

Follow peace with all men - Do not give indulgence to those passions which lead to litigations, strifes, wars; see the notes on Romans 14:19. The connection here requires us to understand this mainly of persecutors. The apostle is referring to the trials which those whom he addressed were experiencing. Those trials seem to have arisen mainly from persecution, and he exhorts them to manifest a spirit of kindness toward all - even though they were engaged in persecuting them. This is the temper of the gospel. We are to make war with sin, but not with people; with bad passions and corrupt desires, but not with our fellow-worms.
And holiness - Instead of yielding to contending passions and to a spirit of war; instead of seeking revenge on your persecutors and foes, make it rather your aim to be holy. Let that be the object of your pursuit; the great purpose of your life. Men might in such cases counsel them to seek revenge; the spirit of religion would counsel them to strive to be holy. In such times they were in great danger of giving indulgence to evil passions, and hence, the special propriety of the exhortation to endeavor to be holy.
Without which no man shall see the Lord - That is, shall see him in peace; or shall so see him as to dwell with him. All will see him in the day of judgment, but to "see" one is often used in the sense of being with one; dwelling with one; enjoying one; see the notes on Matthew 5:8. The principle here stated is one which is never departed from; Revelation 21:27; Isaiah 35:8; Isaiah 52:1; Isaiah 60:21; Joel 3:17; Matthew 13:41; 1-Corinthians 6:9-10. No one has ever been admitted to heaven in his sins; nor is it desirable that anyone ever should be. Desirable as it is that lost people should be happy, yet it is benevolence which excludes the profane, the impious, and the unbelieving from heaven - just as it is benevolence to a family to exclude profligates and seducers, and as it is benevolence to a community to confine thieves and robbers in prison. This great principle in the divine administration will always be adhered to; and hence, they who are expecting to be saved without holiness or religion, are destined to certain disappointment.
Heaven and earth will pass away, but God will not admit one unrepenting and unpardoned sinner to heaven. It was the importance and the certainty of this principle which made the apostle insist on it here with so much earnestness. Amidst all their trials; when exposed to persecution; and when everything might tempt them to the indulgence of feelings which were the opposite of holiness, they were to make it their great object to be like God. For this they were to seek, to strive. to labor, to pray. This with us in all our trials should also be the great aim of life. How deeply affecting then is the inquiry whether we have that holiness which is indispensable to salvation! Let us not deceive ourselves. We may have many things else - many things which are in themselves desirable, but without this one thing we shall never see the Lord in peace. We may have wealth, genius, learning, beauty, accomplishments, houses, lands, books, friends - but without religion they will be all in vain. Never can we see God in peace without a holy heart; never can we be admitted into heaven without that religion which will identify us with the angels around the throne!

Follow peace with all men - Cultivate, as far as you possibly can, a good understanding, both with Jews and Gentiles. Ειρηνην διωκετε, pursue peace with the same care, attention, and diligence, as beasts do their game; follow it through all places; trace it through all winding circumstances; and have it with all men, if you can with a safe conscience.
And holiness - Τον ἁγιασμον· That state of continual sanctification, that life of purity and detachment from the world and all its lusts, without which detachment and sanctity no man shall see the Lord - shall never enjoy his presence in the world of blessedness. To see God, in the Hebrew phrase, is to enjoy him; and without holiness of heart and life this is impossible. No soul can be fit for heaven that has not suitable dispositions for the place.

(9) Follow peace with all [men], and holiness, without which no man shall see the Lord:
(9) We must live in peace and holiness with all men.

Follow peace with all men,.... That are in a natural and domestic relation to one another, being of the same family; and that are in a civil and political one, being of the same nation, city, or society; and that are in a spiritual one, being members of the same church; or, if not, yet being saints, and though in some things different in judgment; yea, even peace is to be followed with enemies, as much as in us lies: and perhaps by "all men", the Gentiles may be more especially designed, whose peace the Hebrews thought they were not to seek, Deuteronomy 23:6 mistaking the sense of the text, by applying it to the Gentiles in general: to "follow peace", signifies an eager pursuit after it, in the use of proper means; exerting the utmost of a man's power to attain it, in all things possible: many things serve to enforce this upon the saints; this is most agreeable to all the three divine Persons; to God, who is the God of peace; to Christ, the Prince of peace; and to the Spirit, one of whose fruits is peace; and to the characters of the saints, who are sons of peace, and who are called to peace, and who make a profession of the Gospel of peace; and to the privileges they enjoy, being interested in the covenant of peace, partaking of spiritual peace now, and being entitled to eternal peace hereafter: and this agrees with the sayings and counsels of the ancient Jews. It was a saying of Hillell (r), who lived about the times of Christ;
"be thou one of the disciples of Aaron, who loved peace, , "and followed peace".''
This is said of Aaron in the Talmud (s), that
"he loved peace, and followed peace, and made peace between a man and his neighbour, as is said, Malachi 2:6.''
They recommend peace on many accounts, and say, great is peace, and among the rest, because it is one of the names of God (t):
and holiness: this being added to peace, shows that peace is no further to be followed than is consistent with holiness; and holiness here does not design any particular branch of holiness, as chastity of the body and mind, but the whole of holiness, inward and outward; and intends true holiness, in opposition to ceremonial holiness, which the Hebrews were fond of, and pursued after: it means even perfect holiness; for though holiness is not perfect in this life, yet it will be in heaven; and there is a perfection of it in Christ; and it is to be followed after, by going to Christ for more grace, and exercising faith upon him, as our sanctification; and by eager desires that the Spirit of God would sanctify us more and more, and enable us, by his grace and strength, to walk in the way of holiness, till we get safe to heaven:
without which no man shall see the Lord; or "God", as the Vulgate Latin and Ethiopic versions read; that is, with the beatific vision in heaven: or the Lord Jesus Christ, "our Lord", as the Syriac version reads; even in this life, so as to have communion with him; and hereafter, so as to behold his glory, both intellectually and corporeally: to such a sight holiness is necessary; for God is holy, and Christ is holy, and so is heaven, and so are the angels, and the souls of men in it.
(r) Pirke Abot, c. 1. sect. 12. (s) T. Bab. Sanhedrin, fol. 6. 2. & Gloss. in T. Bab. Yoma, fol. 71. 2. (t) Vajikra Rabba, sect. 9. fol. 153. 1, 2.

follow peace with all men--with the brethren especially (Romans 14:19), that so the "lame" among them be not "turned out of the way" (Hebrews 12:13), and that no one of them "fail of the grace of God" (Hebrews 12:15).
holiness--a distinct Greek word from God's "holiness" (Hebrews 12:10). Translate here "sanctification." His is absolute holiness: our part is to put on His holiness, becoming "holy as He is holy," by sanctification. While "following peace with all men," we are not so to seek to please them, as to make God's will and our sanctification a secondary object; this latter must be our first aim. (Galatians 1:10).
without which--Greek, "apart from which."
no man shall see the Lord--no man as a son; in heavenly glory (Revelation 22:3-4). In the East, none but the greatest favorites are admitted to the honor of seeing the king (compare 2-Samuel 14:24). The Lord being pure and holy, none but the pure and holy shall see Him (Matthew 5:8). Without holiness in them, they could not enjoy Him who is holiness itself (Zac 14:20). The connection of purity with seeing the Lord, appears in 1-John 3:2-3; Ephesians 5:5. Contrast Hebrews 12:16 (compare 1-Thessalonians 4:3). In Matthew 24:30; Revelation 1:7, it is said that all shall see the Lord; but, that shall be as a Judge, not as their lasting portion and God, which is meant here. The Greek verb does not denote the mere action of seeing, but the seer's state of mind to which the object is presented: so in Matthew 5:8 they shall truly comprehend God [TITTMANN]. None but the holy could appreciate the holy God, none else therefore shall abide in His presence. "The bad shall only see Him in His form as Son of man [compare Revelation 1:13, with Revelation 1:7; and Matthew 24:30; Acts 1:11; Acts 17:31]; still it will be in the glory in which He shall judge, not in the lowliness in which He was judged. His form as God, wherein He is equal to the Father, without doubt the ungodly shall not see; for it is only 'the pure in heart who shall see God'" [AUGUSTINE]. "He shall come to judge, who stood before a judge. He shall come in the form in which He was judged, that they may see Him whom they pierced: He who was before hidden shall come manifested in power: He, as Judge, shall condemn the real culprits, who was Himself falsely made a culprit."

Follow peace with all. Live peaceful lives.
And holiness. Pure and sinless lives.
Without which no man, etc. Without a holy life no one shall be in fellowship with God.
To see the Lord is to realize his presence with us. See Matthew 5:8.
Looking diligently. Being careful that no one lags behind and falls by the way so as not to reach the final reward.
Lest any root of bitterness. Any bitter opposition, or element of disturbance causing members to sin.
Lest there be any fornicator. Of course such a sinner would not live the life of holiness enjoined.
Or profane person. A worldly person who profanes holy privileges by placing on them a worldly estimate.
Like Esau. See Genesis 25:27-30. He illustrates what is meant by a profane person. For a savory meal he bartered away a birthright bestowed by God. So any professing Christian who would sell his heavenly birthright for worldly advantages would be a profane person.
When he would have inherited the blessing. See Genesis 27:31-34. The spiritual blessing that belonged to the birthright was denied to Esau though he wept over the disappointment.
No place of repentance. No way to correct the mistake and to secure the blessing. It was too late for this, since he had forfeited his birthright. The apostle holds up his case as a warning example.

Follow peace with all men - This second branch of the exhortation concerns our neighbours; the third, God. And holiness - The not following after all holiness, is the direct way to fall into sin of every kind.