Treasury of Scripture Knowledge
Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age, because she judged him faithful who had promised.
Then Abraham fell on his face, and laughed, and said in his heart, "Will a child be born to him who is one hundred years old? Will Sarah, who is ninety years old, give birth?"
Now Abraham and Sarah were old, well advanced in age. Sarah had passed the age of childbearing.
Yahweh visited Sarah as he had said, and Yahweh did to Sarah as he had spoken.
Behold, Elizabeth, your relative, also has conceived a son in her old age; and this is the sixth month with her who was called barren.
1 Peter 3:5
For this is how the holy women before, who hoped in God also adorned themselves, being in subjection to their own husbands:
let us hold fast the confession of our hope without wavering; for he who promised is faithful.
Yet, looking to the promise of God, he didn't waver through unbelief, but grew strong through faith, giving glory to God,
2 Kings 4:17
The woman conceived, and bore a son at that season, when the time came around, as Elisha had said to her.