For not through the Law was the promise made to Abraham or his offspring that he should be the heir of the world, but through the righteousness of faith.

For if they that are of the Law are heirs, then faith becometh a vain thing, and the promise is made of no effect.

Therefore the inheritance was made to depend on faith, that it might be a matter of grace; that the promise might be sure to all the offspring, not to that only which is under the Law, but to that also which hath the faith of Abraham, who is the father of us all

nor did he waver in respect to the promise of God through unbelief, but was strong in faith, giving glory to God;

That is, not the children by natural descent are children of God, but the children to whom the promise is made are accounted as the offspring.

For the word of promise is this: "At this time I will come, and Sarah shall have a son."