Romans 4:17-19

Revised Standard Version Catholic Edition

¹⁷ as it is written, “I have made you the father of many nations”—in the presence of the God in whom he believed, who gives life to the dead and calls into existence the things that do not exist. ¹⁸ In hope he believed against hope, that he should become the father of many nations; as he had been told, “So shall your descendants be.” ¹⁹ He did not weaken in faith when he considered his own body, which was as good as dead because he was about a hundred years old, or when he considered the barrenness of Sarah’s womb.