Romans 4:19-22 - And being not weak in faith, Abraham considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sara’s womb: he staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God; and being fully persuaded that, what he had promised, he was able also to perform. And therefore it was imputed to him for righteousness.