And the scripture was fulfilled, saying: Abraham believed God, and it was reputed to him to justice, and he was called the friend of God.

“Lay aside, therefore, the evil, the old, the corrupt leaven, and be ye changed into the new leaven of grace. Abide in Christ, that the stranger may not have dominion over you. It is absurd to speak of Jesus Christ with the tongue, and to cherish in the mind a Judaism which has now come to an end. For where there is Christianity there cannot be Judaism. For Christ is one, in whom every nation that believes, and every tongue that confesses, is gathered unto God. And those that were of a stony heart have become the children of Abraham, the friend of God; and in his seed all those have been blessed who were ordained to eternal life in Christ.”

“And the Scripture was fulfilled,.... Gen 15:6 which speaks of Abraham's faith, and the imputation of to him for righteousness; for the above action of Abraham, in offering up his son, was a clear proof of the truth of his faith, there commended: by this it was made known what a strong faith he had in God, and what reason there was to believe that he was a justified person. Abraham believed God, and it was imputed to him for righteousness; See Gill on Rom 4:3 which shows both that Abraham was justified before he wrought this work, and therefore that could not be the cause or matter of his justification, but only an effect and evidence of it; and that his justification was by faith, or that object which his faith regarded, and had to do with, was his justifying righteousness: and he was called the friend of God, Ch2 20:7 he was loved by God with an everlasting love, who showed acts of friendship to him; called him by his grace, and blessed him with spiritual blessings, and increased him with the increase of God; favoured him with near communion with him, honoured him with high characters, and distinguished him by peculiar marks of his favour, and reckoned his enemies and friends as his own; Gen 12:8 and Abraham, on the other hand, loved God, and showed himself friendly to him; trusted in him, and believed every word of his; readily complied with his will, and not only yielded a cheerful obedience to his commands, but enjoined his children after him to observe them: this was a name which Abraham was well known by among the eastern nations; hence he is called by the Mahometans, , "Khalil Allah", the friend of God; and Mahomet says himself (c), "God took Abraham for his friend.'' (c) Koran, Sura 4:125.”

“The scripture was fulfilled - He believed God; this faith was never inactive, it was accounted to him for righteousness: and being justified by thus believing, his life of obedience showed that he had not received the grace of God in vain. See the notes on Gen 15:6; Rom 4:3 (note); Gal 3:6 (note); where this subject is largely explained. The friend of God - The highest character ever given to man. As among friends every thing is in common; so God took Abraham into intimate communion with himself, and poured out upon him the choicest of his blessings: for as God can never be in want, because he possesses all things; so Abraham his friend could never be destitute, because God was his friend.”

“scripture was fulfilled-- Gen 15:6, quoted by Paul, as realized in Abraham's justification by faith; but by James, as realized subsequently in Abraham's work of offering Isaac, which, he says, justified him. Plainly, then, James must mean by works the same thing as Paul means by faith, only that he speaks of faith at its manifested development, whereas Paul speaks of it in its germ. Abraham's offering of Isaac was not a mere act of obedience, but an act of faith. Isaac was the subject of the promises of God, that in him Abraham's seed should be called. The same God calls on Abraham to slay the subject of His own promise, when as yet there was no seed in whom those predictions could be realized. Hence James' saying that Abraham was justified by such a work, is equivalent to saying, as Paul does, that he was justified by faith itself; for it was in fact faith expressed in action, as in other cases saving faith is expressed in words. So Paul states as the mean of salvation faith expressed. The "Scripture" would not be "fulfilled," as James says it was, but contradicted by any interpretation which makes man's works justify him before God: for that Scripture makes no mention of works at all, but says that Abraham's belief was counted to him for righteousness. God, in the first instance, "justifies the ungodly" through faith; subsequently the believer is justified before the world as righteous through faith manifested in words and works (compare Mat 25:35-37, "the righteous," Mat 25:40). The best authorities read, "But Abraham believed," &c. and he was called the Friend of God--He was not so called in his lifetime, though he was so even then from the time of his justification; but he was called so, being recognized as such by all on the ground of his works of faith. "He was the friend (in an active sense), the lover of God, in reference to his works; and (in a passive sense) loved by God in reference to his justification by works. Both senses are united in Joh 15:14-15" [BENGEL].”