[An example of this is] Abraham, who believed God's [promise] and [because of such faith] he was considered right with God.

The Scripture, foreseeing that God would justify the Gentiles by faith, proclaimed the good news [of the Savior] to Abraham in advance [with this promise], saying, “In you shall all the nations be blessed.”

That the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith.

And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.

For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.

Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator.

Now the mediator or go-between [in a transaction] is not [needed] for just one party; whereas God is only one [and was the only One giving the promise to Abraham, but the Law was a contract between two, God and Israel; its validity depended on both].

Is the law, then, against the promise of God? God forbid. Howbeit, if there had been a law given which could have given life: then no doubt righteousness should have come by the law.

But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.

And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.

But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.

Now we, brethren, as Isaac was, are the children of promise.

But as at that time the child [of ordinary birth] born according to the flesh persecuted the son who was born according to [the promise and working of] the Spirit, so it is now also.