Genesis 17:19
God said, "No, Sarah your wife is going to bear you a son, and you will name him Isaac. I will confirm my covenant with him as a perpetual covenant for his descendants after him.
Genesis 21:2-3
So Sarah became pregnant and bore Abraham a son in his old age at the appointed time that God had told him.
Genesis 17:21
But I will establish my covenant with Isaac, whom Sarah will bear to you at this set time next year."
Genesis 18:10-14
One of them said, "I will surely return to you when the season comes round again, and your wife Sarah will have a son!" (Now Sarah was listening at the entrance to the tent, not far behind him.
Genesis 21:6
Sarah said, "God has made me laugh. Everyone who hears about this will laugh with me."
Genesis 26:3
Stay in this land. Then 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 fulfill the solemn promise I made to your father Abraham.
2 Kings 4:16-17
He said, "About this time next year you will be holding a son." She said, "No, my master! O prophet, do not lie to your servant!"
Luke 1:13-20
But the angel said to him, "Do not be afraid, Zechariah, for your prayer has been heard, and your wife Elizabeth will bear you a son; you will name him John.
Romans 9:6-9
It is not as though 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 and sisters, are children of the promise like Isaac.