4:3 {3} For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
(3) A confirmation of the proposition: Abraham was justified by imputation of faith, and therefore freely, without any regard being give to his works.
4:3 For what saith the scripture? The passage quoted is found in Ge 15:6, and is quoted three times in the New Testament--here, and in Ga 3:6 and in Jas 2:23. God promised an heir to Abraham, and, although it seemed contrary to nature, he believed the promise. His faith in the promise was
counted unto him for righteousness. It was the ground of his acceptance with God. His faith was a trusting faith, which contained in it the element of obedience. No other faith justifies.
4:3 Abraham believed God - That promise of God concerning the numerousness of his seed, Gen 15:5,7; but especially the promise concerning Christ, Gen 12:3, through whom all nations should be blessed. And it was imputed to him for righteousness - God accepted him as if he had been altogether righteous. Gen 15:6.
4:1-12 To meet the views of the Jews, the apostle first refers to the example of Abraham, in whom the Jews gloried as their most renowned forefather. However exalted in various respects, he had nothing to boast in the presence of God, being saved by grace, through faith, even as others. Without noticing the years which passed before his call, and the failures at times in his obedience, and even in his faith, it was expressly stated in Scripture that he believed God, and it was counted to him for righteousness, Ge 15:6. From this example it is observed, that if any man could work the full measure required by the law, the reward must be reckoned as a debt, which evidently was not the case even of Abraham, seeing faith was reckoned to him for righteousness. When believers are justified by faith, their faith being counted for righteousness, their faith does not justify them as a part, small or great, of their righteousness; but as the appointed means of uniting them to Him who has chosen as the name whereby he shall be called, the Lord our Righteousness. Pardoned people are the only blessed people. It clearly appears from the Scripture, that Abraham was justified several years before his circumcision. It is, therefore, plain that this rite was not necessary in order to justification. It was a sign of the original corruption of human nature. And it was such a sign as was also an outward seal, appointed not only to confirm God's promises to him and to his seed, and their obligation to be the Lord's, but likewise to assure him of his being already a real partaker of the righteousness of faith. Thus Abraham was the spiritual forefather of all believers, who walked after the example of his obedient faith. The seal of the Holy Spirit in our sanctification, making us new creatures, is the inward evidence of the righteousness of faith.