Romans 4:19-22

19Without becoming weak in faith he contemplated his own body, now 1as good as dead since 2he was about a hundred years old, and 3the deadness of Sarah’s womb;

20yet, with respect to the promise of God, he did not waver in unbelief but grew strong in faith, 4giving glory to God,

21and 5being fully assured that 6what God had promised, He was able also to perform.

22Therefore 7it was also credited to him as righteousness.