Genesis 17:19
And God said, "No, but Sarah your wife shall bear a son for you, and you shall call his name Isaac. And I will establish my covenant with him as an everlasting covenant to his offspring after him.
Genesis 21:2-3
And she conceived, and Sarah bore to Abraham a son in his old age at the appointed time that God had told him.
Genesis 17:21
But my covenant I will establish with Isaac, whom Sarah shall bear to you at this appointed time next year."
Genesis 18:10-14
And he said, "I will certainly return to you {in the spring}, and look, Sarah your wife [will have] a son." Now Sarah [was] listening at the doorway of the tent, and which [was] behind him.
Genesis 21:6
And Sarah said, "God has made laughter for me; all who hear will laugh for me."
Genesis 26:3
Dwell as an alien in this land, and I will be with you, and will bless you, for I will give all these lands to you and to your descendants, and I will establish the oath that I swore to Abraham you father.
2 Kings 4:16-17
And he said, "At this time {next spring}, you [will be] embracing a son." She said, "No, my lord, man of God! You must not tell a lie to your servant!"
Luke 1:13-20
But the angel said to him, "Do not be afraid, Zechariah, because your prayer has been heard, and your wife Elizabeth will bear you a son, and you will call his name John.
Romans 9:6-9
But [it is] not as if the word of God had failed. For not all those [who are descended] from Israel [are truly] Israel,
Galatians 4:28-31
But you, brothers, are children of the promise, just as Isaac.