Romans 4:19-22

19And 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: 20He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God; 21And being fully persuaded that, what he had promised, he was able also to perform. 22And therefore it was imputed to him for righteousness.