Moses is giving at that place a visionary (as we suppose) correspondence between Jehovah and Abraham; in which the Lord promises to the patriarch to be his “shield and exceeding great reward,” and upon Abraham’s complaining that he was childless, his attention is directed to the stars, and he is told that it will be equally impracticable to number his posterity, and then follow the words “Abraham believed in[[53]] the Lord, and he counted it to him for righteousness.”
Here it is given as an old-testament proof of that which has been a little before asserted “that a man is justified by faith without the deeds of the law,” but because this doctrine would seem to make void the law, the apostle states this objection, then denies it with abhorrence, and introduces for his support Abraham’s justification before God, “if Abraham were justified by works he hath whereof to glory, but not before God; for what saith the scriptures? Abraham believed God, and it was counted unto him for righteousness.”
In the letter to the christians of Galatia he aims to bring them back from depending on their obedience to the moral and ceremonial laws, to a reliance upon Christ for salvation, he declares that “by the works of the law no flesh shall be justified” in the sight of God; and that christians are “dead to the law,” “seek to be justified by Christ,” and “live by the faith of the Son of God.” He asserts “if righteousness come by the law then Christ is dead in vain.” He charges the Galatians with folly. After having heard, seen, and experienced the doctrines of the Gospel, its extraordinary and ordinary spiritual powers, to go back to dead works would argue something like fascination. And then to show that the Gospel mode of justification by faith was not peculiar to the Gospel he quotes from the book of Genesis these words; “Abraham believed God, and it was accounted to him for righteousness.”
The apostle James reprehends such as profess to be believers and yet are not careful to maintain good works; such professions of faith are less credible than the fruits of holiness; “show me thy faith without thy works, and I will show thee my faith by my works.” Faith without works he pronounces to be dead, not merely inoperative, but destitute of a living principle. He then introduces Abraham’s example of offering up Isaac as a proof of his faith; this work being a manifest effect of his faith in God, justifies, in the sight of all men, his character as a believer, “and the scripture” he says “was fulfilled which saith Abraham believed God, and it was imputed unto him for righteousness.” The offering up of Isaac, having taken place several years after it had been said that “Abraham believed God,” was an undeniable evidence of the truth, and a fulfilment, of that scripture.
Abraham’s faith here mentioned has been understood as implying both the act of believing God’s promises and his yielding to the call of God by emigrating, &c.[[54]] which faith, and its fruits, though an imperfect righteousness, was, it is alleged, by the favour of God accepted as a justifying righteousness.
But the apostle here contrasts faith with works, and denies a justification before God to be attainable by our obedience, consequently his introduction of Abraham’s justification by his good deeds would have destroyed his own argument.
Others[[55]] understand Abraham to have been justified on the account of the mere act of believing: and this has been confined to his faith in the one promise of a numerous posterity.
That the Lord[[56]] “in judging Abraham will place on one side of the account his duties, and on the other his performances, and on the side of his performances he will place his faith, and by mere favour value it equal to a complete performance of his duty, and reward him as if he were a perfectly righteous person.”
Faith is the mind’s assent to external evidence; faith thus strictly considered as an act, is man’s act, as much so as any can be, and as the understanding at least in its application to the evidence must be accompanied by the consent of the will, here is every thing that is necessary to constitute a work, and accordingly it is commanded as a duty, the neglect of which is criminal. If it be thus that faith justifies the believer in the sight of God, then there is no propriety in saying we are not justified by works, and if it were possible still less in adducing the example of Abraham’s justification by that which was no more than a duty to prove that we cannot be justified by works, “Christ being the end of the law for righteousness to every one who believeth.” If man can be so justified boasting is not excluded he has whereof to glory.
But the design of the apostle was to show that Abraham himself one of the holiest of men with all his good deeds, and implicit obedience to divine commands was not justified for his own holiness or godliness, for that is the opinion he is combating, but by what he calls faith. When the things which we are required to believe are of a spiritual nature, the “carnal mind” requires to be freed from its prejudices before it will “receive them,” and because supernatural aid is necessary to such minds and all naturally possess them, such “faith” must unquestionably be “the gift of God” in a sense higher than that of every other species of faith exercised under the support of Divine Providence. If faith is a gift of God it merits nothing for us, can never create an obligation on Divine justice for remuneration, and so can never be a justifying righteousness.