Genesis 17:19
And God said, Sarah your wife shall bear you a son indeed; and you shall call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his descendants after him.
Genesis 21:2-3
For Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him.
Genesis 17:21
But my covenant will I establish with Isaac, whom Sarah shall bear unto you at this set time in the next year.
Genesis 18:10-14
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.
Genesis 21:6
And Sarah said, God has made me to laugh, so that all that hear will laugh with me.
Genesis 26:3
Sojourn in this land, and I will be with you, and will bless you; for unto you, and unto your descendants, I will give all these countries, and I will perform the oath which I swore unto Abraham your father;
2 Kings 4:16-17
And he said, About this season, next year, you shall embrace a son. And she said, Nay, my lord, you man of God, do not lie unto your handmaid.
Luke 1:13-20
But the angel said unto him, Fear not, Zachariah: for your prayer is heard; and your wife Elizabeth shall bear you a son, and you shall call his name John.
Romans 9:6-9
Not as though the word of God has taken no effect. For they are not all Israel, who are of Israel:
Galatians 4:28-31
Now we, brethren, as Isaac was, are the children of promise.