Happy are the peacemakers By peacemakers he means those who not only seek peace and avoid quarrels, as far as lies in their power, but who also labor to settle differences among others, who advise all men to live at peace, and take away every occasion of hatred and strife. There are good grounds for this statement. As it is a laborious and irksome employment to reconcile those who are at variance, persons of a mild disposition, who study to promote peace, are compelled to endure the indignity of hearing reproaches, complaints, and remonstrances on all sides. The reason is, that every one would desire to have advocates, who would defend his cause. That we may not depend on the favor of men, Christ bids us look up to the judgment of his Father, who is the God of peace, (Romans 15:33,) and who accounts us his children, while we cultivate peace, though our endeavors may not be acceptable to men: for to be called means To Be Accounted the children of God

Blessed are the peacemakers - Those who strive to prevent contention, strife, and war; who use their influence to reconcile opposing parties, and to prevent lawsuits and hostilities in families and neighborhoods. Every man may do something of this; and no man is more like God than he who does it. There ought not to be unlawful and officious interference in that which is none of our business; but without any danger of acquiring this character, every man has many opportunities of reconciling opposing parties. Friends, neighbors, people of influence, lawyers, physicians, ministers of the gospel, may do much to promote peace. And it should be taken in hand in the beginning. "The beginning of strife," says Solomon, "is like the letting out of water." "An ounce of prevention," says the English proverb, "is worth a pound of cure." Long and most deadly quarrels might often be prevented by a little kind interference in the beginning.
Children of God - See the notes at Matthew 1:1. Those who resemble God, or who manifest a spirit like his. He is the Author of peace 1-Corinthians 14:33; and all those who endeavor to promote peace are like him, and are worthy to be called his children.

The peace-makers - Ειρηνη, peace, is compounded of ειρειν (εις) ἑν, connecting into one: for as War distracts and divides nations, families, and individuals, from each other, inducing them to pursue different objects and different interests, so Peace restores them to a state of unity, giving them one object, and one interest. A peace-maker is a man who, being endowed with a generous public spirit, labors for the public good, and feels his own interest promoted in promoting that of others: therefore, instead of fanning the fire of strife, he uses his influence and wisdom to reconcile the contending parties, adjust their differences, and restore them to a state of unity. As all men are represented to be in a state of hostility to God and each other, the Gospel is called the Gospel of peace, because it tends to reconcile men to God and to each other. Hence our Lord here terms peace-makers the children of God: for as he is the Father of peace, those who promote it are reputed his children. But whose children are they who foment divisions in the Church, the state, or among families? Surely they are not of that God, who is the Father of peace, and lover of concord; of that Christ, who is the sacrifice and mediator of it; of that Spirit, who is the nourisher and bond of peace; nor of that Church of the Most High, which is the kingdom and family of peace.
St. Clement, Strom. lib. iv. s. 6, in fin. says, that "Some who transpose the Gospels add this verse: Happy they who are persecuted by justice, for they shall be perfect: happy they who are persecuted on my account, for they shall have a place where they shall not be persecuted."

Blessed are the peace makers,.... Not between God and man, for no man can make his own peace with God; nor can any mere creature, angels, or men, make it for him; Christ, in this sense, is the only peace maker: but between men and men; and such are they, who are of peaceable dispositions themselves; live peaceably with all men, and with one another, as their relation obliges to, and their mutual comfort requires; and with the men of the world; and who are ready, willing, and very serviceable, in composing differences, and making peace between their fellow creatures and fellow Christians. The Jews speak very highly, and much, in the commendation of peace making; they reckon this among the things which shall be of use to a man, both in this, and the other world.
"These are the things, (say they (e),) the fruit of which a man enjoys in this world, and his lot or portion remains for him in the world to come; honouring father and mother, liberality, , "and making peace between a man and his neighhour."''
This, they say (f), Aaron was much disposed to.
"Moses used to say, let justice break through the mountain; but Aaron loved peace, and pursued it, and made peace between a man and his neighhour, as is said, Malachi 2:6''
Hence that saying of Hillell (g),
"be thou one of the disciples of Aaron, who loved peace, and followed after it; he loved men, and brought them to the law.''
Now of such persons it is said, that
they shall be called the children of God; that is, they are the children of God by adopting grace, which is made manifest in their regeneration; and that is evidenced by the fruits of it, of which this is one; they not only shall be, and more manifestly appear to be, the sons of God hereafter; but they are, and are known to be so now, by their peaceable disposition, which is wrought in them by the Spirit of God; whereby they become like to the God of peace, and to Christ, the great and only peacemaker, and so are truly sons of peace.
(e) Misn. Peah. c. 1. sect. 1. T. Bab. Sabbat. fol. 127. 1. & Kiddushin. fol. 40. 1. (f) T. Bab. Sanhedrim, fol. 6. 2. Vid. Abot. R. Nathan, c. 12. fol. 4. 2. (g) Pirke Abot. c. 1. sect. 12.

Blessed are the peacemakers--who not only study peace, but diffuse it.
for they shall be called the children of God--shall be called sons of God. Of all these beatitudes this is the only one which could hardly be expected to find its definite ground in the Old Testament; for that most glorious character of God, the likeness of which appears in the peacemakers, had yet to be revealed. His glorious name, indeed--as "The Lord, the Lord God, merciful and gracious, long-suffering, and abundant in goodness and truth, forgiving iniquity and transgression and sin"--had been proclaimed in a very imposing manner (Exodus 34:6), and manifested in action with affecting frequency and variety in the long course of the ancient economy. And we have undeniable evidence that the saints of that economy felt its transforming and ennobling influence on their own character. But it was not till Christ "made peace by the blood of the cross" that God could manifest Himself as "the God of peace, that brought again from the dead our Lord Jesus, that great Shepherd of the sheep, through the blood of the everlasting covenant" (Hebrews 13:20) --could reveal Himself as "in Christ reconciling the world unto Himself, not imputing their trespasses unto them," and hold Himself forth in the astonishing attitude of beseeching men to be "reconciled to Himself" (2-Corinthians 5:19-20). When this reconciliation actually takes place, and one has "peace with God through our Lord Jesus Christ"--even "the peace of God which passeth all understanding"--the peace-receivers become transformed into peace-diffusers. God is thus seen reflected in them; and by the family likeness these peacemakers are recognized as the children of God. In now coming to the eighth, or supplementary beatitude, it will be seen that all that the saints are in themselves has been already described, in seven features of character; that number indicating completeness of delineation. The last feature, accordingly, is a passive one, representing the treatment that the characters already described may expect from the world. He who shall one day fix the destiny of all men here pronounces certain characters "blessed"; but He ends by forewarning them that the world's estimation and treatment of them will be the reserve of His.

Blessed are the peacemakers. Not the soldiers of a warrior king, such as the Jews expected but the men who, in the name of the Prince of Peace, go forth to proclaim peace and good will among men. Christ is the great Peacemaker.

The peace makers - They that out of love to God and man do all possible good to all men. Peace in the Scripture sense implies all blessings temporal and eternal. They shall be called the children of God - Shall be acknowledged such by God and man. One would imagine a person of this amiable temper and behaviour would be the darling of mankind. But our Lord well knew it would not be so, as long as Satan was the prince of this world. He therefore warns them before of the treatment all were to expect, who were determined thus to tread in his steps, by immediately subjoining, Happy are they who are persecuted for righteousness' sake. Through this whole discourse we cannot but observe the most exact method which can possibly be conceived. Every paragraph, every sentence, is closely connected both with that which precedes, and that which follows it. And is not this the pattern for every Christian preacher? If any then are able to follow it without any premeditation, well: if not, let them not dare to preach without it. No rhapsody, no incoherency, whether the things spoken be true or false, comes of the Spirit of Christ.