For this is the word of promise, At this time will I come, and Sarah shall have a son.
But my covenant will I establish with Isaac, whom Sarah shall bear unto you at this set time in the next year.
And he said, I will certainly return unto you according to the time of life; and, lo, Sarah your wife shall have a son. And Sarah heard it in the tent door, which was behind him.
Is anything too hard for the LORD? At the time appointed I will return unto you, according to the time of life, and Sarah shall have a son.
For Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him.
And now I say unto you, Refrain from these men, and let them alone: for if this counsel or this work be of men, it will come to nothing:
By faith Abraham, when he was tested, offered up Isaac: and he that had received the promises offered up his only begotten son.