Romans 4:16-21

YLT(i) 16 Because of this it is of faith, that it may be according to grace, for the promise being sure to all the seed, not to that which is of the law only, but also to that which is of the faith of Abraham,
17 who is father of us all (according as it hath been written—`A father of many nations I have set thee,') before Him whom he did believe—God, who is quickening the dead, and is calling the things that be not as being. 18 Who, against hope in hope did believe, for his becoming father of many nations according to that spoken: `So shall thy seed be;' 19 and not having been weak in the faith, he did not consider his own body, already become dead, (being about a hundred years old,) and the deadness of Sarah's womb, 20 and at the promise of God did not stagger in unbelief, but was strengthened in faith, having given glory to God, 21 and having been fully persuaded that what He hath promised He is able also to do: