Romans 4:17-19

Moffatt(i) 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;