Romans 4:16-17

Therefore is it of faith, that according to grace the promise might be firm to all the seed; 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 thee a father of many nations,) before God, whom he believed, who quickeneth the dead; and calleth those things that are not, as those that are.