41 Abraham was, humanly speaking, the founder of our Jewish nation. What did he discover about being made right with God? 2 If his good deeds had made him acceptable to God, he would have had something to boast about. But that was not God's way. 3 For the Scriptures tell us, "Abraham believed God, and God counted him as righteous because of his faith." 4 When people work, their wages are not a gift, but something they have earned. 5 But people are counted as righteous, not because of their work, but because of their faith in God who forgives sinners. 6 David also spoke of this when he described the happiness of those who are declared righteous without working for it: 7 "Oh, what joy for those whose disobedience is forgiven, whose sins are put out of sight. 8 Yes, what joy for those whose record the Lord has cleared of sin."
9 Now, is this blessing only for the Jews, or is it also for uncircumcised Gentiles? Well, we have been saying that Abraham was counted as righteous by God because of his faith. 10 But how did this happen? Was he counted as righteous only after he was circumcised, or was it before he was circumcised? Clearly, God accepted Abraham before he was circumcised! 11 Circumcision was a sign that Abraham already had faith and that God had already accepted him and declared him to be righteous-even before he was circumcised. So Abraham is the spiritual father of those who have faith but have not been circumcised. They are counted as righteous because of their faith. 12 And Abraham is also the spiritual father of those who have been circumcised, but only if they have the same kind of faith Abraham had before he was circumcised.
Matthew Henry's Commentary on Romans 4:1-12
Commentary on Romans 4:1-12
(Read Romans 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," Genesis 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.