Romans 4:16-17

16 That is why it depends on faith, 1in order that the promise may rest on grace and 2be guaranteed to all his offspring--not only to the adherent of the law but also to the one who shares the faith of Abraham, 3who is the father of us all,
17 as it is written, 4"I have made you the father of many nations"--in the presence of the God in whom he believed, 5who gives life to the dead and calls into existence 6the things that do not exist.