Thematic Bible: Is of God's grace

Therefore, the inheritance is by faith, that it may be according to grace, in order that the promise may be sure to all his posterity, not to those only who are of the law, but to those, also, who are 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,) in the sight of him in whom he believed, even God, who makes the dead alive, and calls those things which are not, as though they were.