Without being weakened in faith, he didn't consider his own body, already having been worn out, (he being about a hundred years old), and the deadness of Sarah's womb.

For this is a word of promise, "At the appointed time I will come, and Sarah will have a son."

By faith, even Sarah herself received power to conceive, and she bore a child when she was past age, since she counted him faithful who had promised.

as Sarah obeyed Abraham, calling him lord, whose children you now are, if you do well, and are not put in fear by any terror.