For this is the word of promise: "AT THIS TIME I WILL COME, AND SARAH SHALL HAVE A SON."
He said, "I will surely return to you at this time next year; and behold, Sarah your wife will have a son." And Sarah was listening at the tent door, which was behind him.
"Is anything too difficult for the LORD? At the appointed time I will return to you, at this time next year, and Sarah will have a son."
"But My covenant I will establish with Isaac, whom Sarah will bear to you at this season next year."
So Sarah conceived and bore a son to Abraham in his old age, at the appointed time of which God had spoken to him.
By faith even Sarah herself received ability to conceive, even beyond the proper time of life, since she considered Him faithful who had promised.
By faith Abraham, when he was tested, offered up Isaac, and he who had received the promises was offering up his only begotten son;