Romans 4:17-21

King James Version

¹⁷ (As it is written, I have made thee a father of many nations,) before him whom he believed, even God, who quickeneth the dead, and calleth those things which be not as though they were.

¹⁸ Who against hope believed in hope, that he might become the father of many nations, according to that which was spoken, So shall thy seed be.

¹⁹ And being not weak in faith, he considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sarah's womb:

²⁰ He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;

²¹ And being fully persuaded that, what he had promised, he was able also to perform.