Romans 4:19-22

19And not being weak in faith, he did not consider his own body, already dead (since he was about a hundred years old), and the deadness of Sarah’s womb.

20He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God,

21and being fully convinced that what He had promised He was also able to perform.

22And therefore “it was accounted to him for righteousness.”