By faith even Sarah herself received power to conceive seed when she was past age, since she counted him faithful who had promised:
And the woman conceived, and bare a son at that season, when the time came round, as Elisha had said unto her.
And behold, Elisabeth thy kinswoman, she also hath conceived a son in her old age: and this is the sixth month with her that was called barren.
That is, it is not the children of the flesh that are children of God; but the children of the promise are reckoned for a seed.
Howbeit the son by the handmaid is born after the flesh; but the son by the freewoman is born through promise.
let us hold fast the confession of our hope that it waver not; for he is faithful that promised: