But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.

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.

Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?

Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.

For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.

And Sarah said, God hath made me to laugh, so that all that hear will laugh with me.

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.

And the woman conceived, and bare a son at that season that Elisha had said unto her, according to the time of life.

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.

For he shall be great in the sight of the Lord, and shall drink neither wine nor strong drink; and he shall be filled with the Holy Ghost, even from his mother's womb.

And he shall go before him in the spirit and power of Elias, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord.

And the angel answering said unto him, I am Gabriel, that stand in the presence of God; and am sent to speak unto thee, and to shew thee these glad tidings.

Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:

That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.

Now we, brethren, as Isaac was, are the children of promise.

Nevertheless what saith the scripture? Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.