"O foolish Galatians," Paul in that case might well say to us again!
"Even as Abraham believed God, and it was reckoned unto him for righteousness. Know therefore that they which be of faith, the same are sons of Abraham. And the scripture, foreseeing that God justifieth the Gentiles by faith, preached the gospel beforehand unto Abraham, _saying_, In thee shall all the nations be blessed. So then they which be of faith are blessed with the faithful Abraham. For as many as are of the works of the law are under a curse: for it is written, Cursed is every one which continueth not in all things that are written in the book of the law, to do them. Now that no man is justified in the law in the sight of God, is evident: for, The righteous shall live by faith; and the law is not of faith; but, He that doeth them shall live in them. Christ redeemed us from the curse of the law, having become a curse for us: for it is written, Cursed is every one that hangeth on a tree: that upon the Gentiles might come the blessing of Abraham in Christ Jesus; that we might receive the promise of the Spirit through faith."--GAL. iii. 6-14.
Faith then, we have learnt, not works of law, was the condition on which the Galatians received the Spirit of Christ. By this gate they entered the Church of God, and had come into possession of the spiritual blessings common to all Christian believers, and of those extraordinary gifts of grace which marked the Apostolic days.
In this mode of salvation, the Apostle goes on to show, there was after all nothing new. The righteousness of faith is more ancient than legalism. It is as old as _Abraham_. His religion rested on this ground. "The promise of the Spirit," held by him in trust for the world, was given to his faith. "You received the Spirit, God works in you His marvellous powers, by the hearing of faith--_even as Abraham believed God_, and it was reckoned to him for righteousness." In the hoary patriarchal days as now, in the time of promise as of fulfilment, faith is the root of religion; grace invites, righteousness waits upon the hearing of faith. So Paul declares in vv. 6-9, and re-affirms with emphasis in ver. 14. The intervening sentences set forth by contrast _the curse_ that hangs over the man who seeks salvation by way of law and personal merit.
Thus the two standing types of religion, the two ways by which men seek salvation, are put in contrast with each other--faith with its blessing, law with its curse. The former is the path on which the Galatians had entered, under the guidance of Paul; the latter, that to which the Judaic teachers were leading them. So far the two principles stand only in antagonism. The antinomy will be resolved in the latter part of the chapter.
But why does Paul make so much of the faith of _Abraham_? Not only because it furnished him with a telling illustration, or because the words of Gen. xv. 6 supplied a decisive proof-text for his doctrine: he could not well have chosen any other ground. Abraham's case was the _instantia probans_ in this debate. "We are Abraham's seed:"[81] this was the proud consciousness that swelled every Jewish breast. "Abraham's bosom" was the Israelite's heaven: even in Hades his guilty sons could claim pity from "Father Abraham" (Luke xvi. 19-31). In the use of this title was concentrated all the theocratic pride and national bigotry of the Jewish race. To the example of Abraham the Judaistic teacher would not fail to appeal. He would tell the Galatians how the patriarch was called, like themselves, out of the heathen world to the knowledge of the true God; how he was separated from his Gentile kindred, and received the mark of circumcision to be worn thenceforth by all who followed in his steps, and who sought the fulfilment of the promise granted to Abraham and his seed.