Romans 4:19-21

American Standard Version

¹⁹ And without being weakened in faith he considered his own body ^[a]now as good as dead (he being about a hundred years old), and the deadness of Sarah’s ^[b]womb; ²⁰ yet, looking unto the promise of God, he wavered not through unbelief, but waxed strong through faith, giving glory to God, ²¹ and being fully assured that what he had promised, he was able also to perform.