Because of faith also Sarah herself received physical power to conceive a child, even when she was long past the age for it, because she considered [God] Who had given her the promise to be reliable and trustworthy and true to His word. [Gen. 17:19; 18:11-14; 21:2.]
And Isaac prayed much to the Lord for his wife because she was unable to bear children; and the Lord granted his prayer, and Rebekah his wife became pregnant.
Then Abraham fell on his face and laughed and said in his heart, Shall a child be born to a man who is a hundred years old? And shall Sarah, who is ninety years old, bear a son?
He did not weaken in faith when he considered the [utter] impotence of his own body, which was as good as dead because he was about a hundred years old, or [when he considered] the barrenness of Sarah's [deadened] womb. [Gen. 17:17; 18:11.]
In the days when Herod was king of Judea there was a certain priest whose name was Zachariah, of the daily service (the division) of Abia; and his wife was also a descendant of Aaron, and her name was Elizabeth.