Romans 4:16-18

16Therefore [it is] on the principle of faith, that [it might be] according to grace, in order to the promise being sure to all the seed, not to that only which [is] of the law, but to that also which [is] of Abraham's faith, who is father of us all,

17(according as it is written, I have made thee father of many nations,) before the 1God whom he believed, who quickens the dead, and calls the things which be not as being;

18who against hope believed in hope to his becoming father of many nations, according to that which was spoken, So shall thy seed be: