But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.

And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.

Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.

For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

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.

Therefore sprang there even of one, and him as good as dead, so many as the stars of the sky in multitude, and as the sand which is by the sea shore innumerable.

By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son,