Romans 4:16-17

For this cause it is of faith, that it may be according to grace, to the end that the promise may be sure to all the offspring, not to that only which is of the law, but to that also which is of the faith of Abraham, who is the father of us all. As it is written, “I have made you a father of many nations.” This is in the presence of him whom he believed: God, who gives life to the dead, and calls the things that are not, as though they were.