Genesis 17:19
And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him.
Genesis 21:2-3
For Sarah conceived, and bare 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, which Sarah shall bear unto thee at this set time in the next year.
Genesis 18:10-14
And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.
Genesis 21:6
And Sarah said, God hath 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 thee, and will bless thee; for unto thee, and unto thy seed, I will give all these countries, and I will perform the oath which I sware unto Abraham thy father;
2 Kings 4:16-17
And he said, About this season, according to the time of life, thou shalt embrace a son. And she said, Nay, my lord, thou man of God, do not lie unto thine handmaid.
Luke 1:13-20
But the angel said unto him, Fear not, Zacharias: for thy prayer is heard; and thy wife Elisabeth shall bear thee a son, and thou shalt call his name John.
Romans 9:6-9
Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
Galatians 4:28-31
Now we, brethren, as Isaac was, are the children of promise.