In these verses the apostle illustrates the difference between believers who rested in Christ only and those judaizers who trusted in the law, by a comparison taken from the story of Isaac and Ishmael. This he introduces in such a manner as was proper to strike and impress their minds, and to convince them of their great weakness in departing from the truth, and suffering themselves to be deprived of the liberty of the gospel: Tell me, says he, you that desire to be under the law, do you not hear the law? He takes it for granted that they did hear the law, for among the Jews it was wont to be read in their public assemblies every sabbath day; and, since they were so very fond of being under it, he would have them duly to consider what is written therein (referring to what is recorded Gen. 16 and 21), for, if they would do this, they might soon see how little reason they had to trust in it. And here, 1. He sets before them the history itself (Gal 4:22, Gal 4:23): For it is written, Abraham had two sons, etc. Here he represents the different state and condition of these two sons of Abraham - that the one, Ishmael, was by a bond-maid, and the other, Isaac, by a free-woman; and that whereas the former was born after the flesh, or by the ordinary course of nature, the other was by promise, when in the course of nature there was no reason to expect that Sarah should have a son. 2. He acquaints them with the meaning and design of this history, or the use which he intended to make of it (Gal 4:24-27): These things, says he, are an allegory, wherein, besides the literal and historical sense of the words, the Spirit of God might design to signify something further to us, and that was, That these two, Agar and Sarah, are the two covenants, or were intended to typify and prefigure the two different dispensations of the covenant. The former, Agar, represented that which was given from mount Sinai, and which gendereth to bondage, which, though it was a dispensation of grace, yet, in comparison of the gospel state, was a dispensation of bondage, and became more so to the Jews, through their mistake of the design of it, and expecting to be justified by the works of it. For this Agar is mount Sinai in Arabia (mount Sinai was then called Agar by the Arabians), and it answereth to Jerusalem which now is, and is in bondage with her children; that is, it justly represents the present state of the Jews, who, continuing in their infidelity and adhering to that covenant, are still in bondage with their children. But the other, Sarah, was intended to prefigure Jerusalem which is above, or the state of Christians under the new and better dispensation of the covenant, which is free both from the curse of the moral and the bondage of the ceremonial law, and is the mother of us all - a state into which all, both Jews and Gentiles, are admitted, upon their believing in Christ. And to this greater freedom and enlargement of the church under the gospel dispensation, which was typified by Sarah the mother of the promised seed, the apostle refers that of the prophet, Isa 54:1, where it is written, Rejoice, thou barren that bearest not; break forth and cry, thou that travailest not; for the desolate hath many more children than she who hath a husband. 3. He applies the history thus explained to the present case (Gal 4:28); Now we, brethren, says he, as Isaac was, are the children of the promise. We Christians, who have accepted Christ, and rely upon him, and look for justification and salvation by him alone, as hereby we become the spiritual, though we are not the natural, seed of Abraham, so we are entitled to the promised inheritance and interested in the blessings of it. But lest these Christians should be stumbled at the opposition they might meet with from the Jews, who were so tenacious of their law as to be ready to persecute those who would not submit to it, he tells them that this was no more than what was pointed to in the type; for as then he that was born after the flesh persecuted him that was born after the Spirit, they must expect it would be so now. But, for their comfort in this case, he desires them to consider what the scripture saith (Gen 21:10), Cast out the bond-woman and her son, for the son of the bond-woman shall not be heir with the son of the free-woman. Though the judaizers should persecute and hate them, yet the issue would be that Judaism would sink, and wither, and perish; but true Christianity should flourish and last for ever. And then, as a general inference from the whole of the sum of what he had said, he concludes (Gal 4:31), So then, brethren, we are not children of the bond-woman, but of the free.

Now we - Who believe in the Lord Jesus, are the children of promise - are the spiritual offspring of the Messiah, the seed of Abraham, in whom the promise stated that all the nations of the earth should be blessed.

But as then,.... In the times of Abraham, when Hagar and Sarah, the types of the two dispensations of the covenant, and Ishmael and Isaac, the figures of the two different seeds, the natural and spiritual seed of Abraham, legalists and true believers, were living:

he that was born after the flesh; which was Ishmael, who was a type, or an allegorical representation of such who were under the Sinai covenant, and were seeking for righteousness by the works of the law; as he was born after the flesh, according to the ordinary course of nature, and was, as he was born, a carnal man; so are self-justiciaries, notwithstanding all their pretensions to religion and righteousness, just as they were born; there is nothing but flesh in them; they are without God, and Christ, and the Spirit, and have neither true faith, nor hope, nor love, not any other grace; they have no internal principle of goodness in them; flesh, or corrupt, nature, has the government of them, is the reigning principle in them; their minds are fleshly, and so are their tenets; and such is their conversation, they trust in the flesh, in outward performances, in their own righteousness, and so come under the curse; for as many as trust in an arm of flesh, or are of the works of the law, are under the curse of it:

persecuted him that was born after the Spirit: by whom is meant Isaac, who, though he was not conceived under the overshadowings of the Holy Spirit, without the help of man, as Christ was; yet because of the divine power which was so eminently displayed in his conception and generation, under all the difficulties, and disadvantages, and seeming impossibilities of nature, he is said to be born after the Spirit: and besides, he was also regenerated by the Spirit of God, was a good man, and one that feared the Lord, as the whole account of him shows; and in this also fitly pointed out the spiritual seed, true believers, under the Gospel dispensation, who are born again of water, and of the Spirit, and are renewed in the spirit of their minds; in whom the work of the Spirit is begun, and grace is the governing principle; in whom the Spirit of God dwells and operates; and whose conversation is spiritual, and who walk not after the flesh, but after the Spirit. The persecution of Isaac by Ishmael was by "mocking" him, Gen 21:9 the Hebrew word there made use of is in allusion to Isaac's name, which signifies "laughter": and Ishmael laughed at him, jeered and derided him. The Jewish doctors are divided about the sense of this: some say that the word rendered "mocking" is expressive of idolatry, according to

Exo 32:6 and that Ishmael would have taught Isaac, and drawn him into it; others that it signifies uncleanness, according to

Gen 39:17 and that he talked to him in a lascivious and indecent manner, in order to corrupt his mind: others that it designs murder according to Sa2 2:14 and that he intended to kill him, and attempted it (a); it is pretty much received by them, that either he finding him alone, or they going out to the field together, he took his bow and drew it, and shot an arrow at him, with an intention to kill him (b), though he pretended it was but in play: and one of their writers on the text says (c), that the word used, by gematry, that is, by the arithmetic of the letters, signifies "to slay"; so that this persecution was not by words only, but by deeds: but others (d) of them more rightly think, that it meant a contention about the inheritance, which Sarah's words to Abraham seem to confirm; and that Ishmael claimed the birthright, and despised Isaac as the younger son; insisted upon the right to the inheritance, and mocked at the promise of God, with respect to Isaac; and might threaten what he would do to him, should he claim it thereupon: mocking has been always reckoned a species of persecution; so the Old Testament saints, among other instances of persecution, had trial of "cruel mockings"; thus our Lord was persecuted, and also his apostles

and even so it is now. The carnal Jews, who trusted in themselves that they were righteous, and despised others, persecuted the spiritual seed that believed in Christ, both by words and deeds; they confiscated their goods, imprisoned their persons, and even put them to death; and the false teachers, though they did not, and could not go such lengths, yet as persons fitly represented by Ishmael, they derided the apostles, and mocked at the doctrines of grace preached by them, and despised those that embraced them; and pleaded that the inheritance belonged to them, upon the foot of the works of the law: and so it is at this day; though there is no persecution of men's persons and estates, yet there never was a greater persecution of the doctrines of grace, and of the righteousness of Christ, and the saints more mocked at and derided for maintaining them; and that by persons just of the same complexion as those in the apostle's time, signified by Ishmael, carnal professors, and self-righteous persons.

(a) Jarchi in Gen. xxi. 9. Bereshit Rabba, sect. 53. fol. 47. 4. (b) Jarchi & Bereshit Rabba, sect. 53, fol. 47. 4. Pirke Eliezer. c. 30. (c) Baal Hattrim, in loc. (d) Jarchi & Bereshit Rabba, ut supra. (sect. 53, fol. 47. 4.)

we--The oldest manuscripts and versions are divided between "we" and "ye." "We" better accords with Gal 4:26, "mother of us."

children of promise--not children after the flesh, but through the promise (Gal 4:23, Gal 4:29, Gal 4:31). "We are" so, and ought to wish to continue so.