Abraham's faith was imputed to him for righteousness,
Romans 4:1 What shall we say then that Abraham our father according to flesh has found? Romans 4:2 For if Abraham has been justified on the principle of works, he has whereof to boast: but not before God; Romans 4:3 for what does the scripture say? And Abraham believed God, and it was reckoned to him as righteousness. Romans 4:4 Now to him that works the reward is not reckoned as of grace, but of debt: Romans 4:5 but to him who does not work, but believes on him who justifies the ungodly, his faith is reckoned as righteousness. Romans 4:6 Even as David also declares the blessedness of the man to whom God reckons righteousness without works: Romans 4:7 Blessed [they] whose lawlessnesses have been forgiven, and whose sins have been covered: Romans 4:8 blessed [the] man to whom [the] Lord shall not at all reckon sin. Romans 4:9 [Does] this blessedness then [rest] on the circumcision, or also on the uncircumcision? For we say that faith has been reckoned to Abraham as righteousness.
before he was circumcised.
Romans 4:10 How then has it been reckoned? when he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision. Romans 4:11 And he received [the] sign of circumcision [as] seal of the righteousness of faith which [he had] being in uncircumcision, that he might be [the] father of all them that believe being in uncircumcision, that righteousness might be reckoned to them also; Romans 4:12 and father of circumcision, not only to those who are of [the] circumcision, but to those also who walk in the steps of the faith, during uncircumcision, of our father Abraham.
By faith only he and his seed received the promise.
Romans 4:13 For [it was] not by law that the promise was to Abraham, or to his seed, that he should be heir of [the] world, but by righteousness of faith. Romans 4:14 For if they which [are] of law be heirs, faith is made vain, and the promise made of no effect. Romans 4:15 For law works wrath; but where no law is neither [is there] transgression.
Abraham is the father of all that believe.
Romans 4:16 Therefore [it is] on the principle of faith, that [it might be] according to grace, in order to the promise being sure to all the seed, not to that only which [is] of the law, but to that also which [is] of Abraham's faith, who is father of us all, Romans 4:17 (according as it is written, I have made thee father of many nations,) before the God whom he believed, who quickens the dead, and calls the things which be not as being; Romans 4:18 who against hope believed in hope to his becoming father of many nations, according to that which was spoken, So shall thy seed be: Romans 4:19 and not being weak in faith, he considered not his own body already become dead, being about a hundred years old, and the deadening of Sarah's womb, Romans 4:20 and hesitated not at the promise of God through unbelief; but found strength in faith, giving glory to God; Romans 4:21 and being fully persuaded that what he has promised he is able also to do; Romans 4:22 wherefore also it was reckoned to him as righteousness. Romans 4:23 Now it was not written on his account alone that it was reckoned to him,
Our faith also shall be imputed to us for righteousness.
Romans 4:24 but on ours also, to whom, believing on him who has raised from among [the] dead Jesus our Lord, Romans 4:25 who has been delivered for our offences and has been raised for our justification, it will be reckoned.