Seeing it is one God - επιπερ εις ο θεος. This has been rendered, Seeing God is one. It however makes little difference in the sense: the apostle's meaning most evidently is, it is one and the same God who made both Jews and Gentiles, who shall justify - pardon, the circumcision - the believing Jews, by faith; and the uncircumcision - the believing Gentiles, by the same faith; as there is but one Savior and one atonement provided for the whole.

It is fanciful to suppose that the apostle has one meaning when he says, εκ πιστεως, By faith, and a different meaning when he says, δια της πιστεως, Through faith. Both the prepositions are to be understood in precisely the same sense; only the addition of the article της, in the last case, extends and more pointedly ascertains the meaning. It is one and the same God who shall justify the believing Jews by faith; and the believing Gentiles δια της πιστεως, by That Same faith.

Seeing it is one God,.... God is one in nature and essence, though there are three persons in the Godhead, Father, Son, and Holy Ghost; whence it appears, that he that is the God of the Jews, is also the God of the Gentiles, or there would be more gods than one; and that these are justified in one and the same manner, or God must be divided; for God, as he is one in nature, so he is one in will, in his promises, and in the methods of his grace:

which shall justify the circumcision by faith, and uncircumcision through faith. The objects of justification are "the circumcision", the circumcised Jews, and "the uncircumcision", the uncircumcised Gentiles; the circumcision of the one does not forward, and the uncircumcision of the other does not hinder, nor neither of them effect the grace of justification: the justifier of them is one and the same, who is God; and the matter of their justification is the same, which is the righteousness of Christ; and the manner of it, or the means of their comfortable apprehension of it, is the same; for those phrases, "by faith", and "through faith", mean one and the same thing; see Philippians 3:9.

By faith - through faith (ἐκ - διά)

Some make the two prepositions equivalent. The difference may be explained from the fact that the real Jew has already a germinating faith from the completion of which justification arises as fruit from a tree. So Wordsworth: "The Jews are justified out of (ἐκ) the faith which their father Abraham had, and which they are supposed to have in him The Gentiles must enter that door and pass through it in order to be justified." Compare Ephesians 2:17.

Seeing it is one God, which shall justify {g} the circumcision by faith, and uncircumcision through faith.

(g) The circumcised.

3:30 Seeing it is one God which shall justify. As there is one God, there is one plan of justification.

The circumcision, the Jews are justified

by faith, a faith not in God, whom they already acknowledged, but a faith in Christ, God manifest in the flesh. In the same way the

uncircumcision, the Gentile world, are justified

through faith. The Gospel is meant by the faith (the article is found in the Greek). The salvation of both is by faith in Christ crucified.

3:30 Seeing it is one God who - Shows mercy to both, and by the very same means.

30. it is one God who shall justify-"has unchangeably fixed that He shall justify."

the circumcision by-"of"

faith, and the uncircumcision through faith-probably this is but a varied statement of the same truth for greater emphasis (see Ro 3:22); though Bengel thinks that the justification of the Jews, as the born heirs of the promise, may be here purposely said to be "of faith," while that of the Gentiles, previously "strangers to the covenants of promise," may be said to be "through faith," as thus admitted into a new family.

Objection:

3:27-31 God will have the great work of the justification and salvation of sinners carried on from first to last, so as to shut out boasting. Now, if we were saved by our own works, boasting would not be excluded. But the way of justification by faith for ever shuts out boasting. Yet believers are not left to be lawless; faith is a law, it is a working grace, wherever it is in truth. By faith, not in this matter an act of obedience, or a good work, but forming the relation between Christ and the sinner, which renders it proper that the believer should be pardoned and justified for the sake of the Saviour, and that the unbeliever who is not thus united or related to him, should remain under condemnation. The law is still of use to convince us of what is past, and to direct us for the future. Though we cannot be saved by it as a covenant, yet we own and submit to it, as a rule in the hand of the Mediator.