Moffatt(i)
16 That is why all turns upon faith; it is to make the promise a matter of favour, to make it secure for all the offspring, not simply for those who are adherents of the Law but also for those who share the faith of Abraham — of Abraham who is the father of us all
17 (as it is written, I have made you a father of many nations). Such a faith implies the presence of the God in whom he believed, a God who makes the dead live and calls into being what does not exist.
18 For Abraham, when hope was gone, hoped on in faith, and thus became the father of many nations — even as he was told, So numberless shall your offspring be.
19 His faith never quailed, even when he noted the utter impotence of his own body (for he was about a hundred years old) or the impotence of Sara's womb;
20 no unbelief made him waver about God's promise; his faith won strength as he gave glory to God
21 and felt convinced that He was able to do what He had promised.