7And she said, Who would have said to Abraham that Sarah would have a child at her breast? for see, I have given him a son now when he is old.
8And when the child was old enough to be taken from the breast, Abraham made a great feast.
9And Sarah saw the son of Hagar the Egyptian playing with Isaac.
10So she said to Abraham, Send away that woman and her son: for the son of that woman is not to have a part in the heritage with my son Isaac.
11And this was a great grief to Abraham because of his son.
12But God said, Let it not be a grief to you because of the boy and Hagar his mother; give ear to whatever Sarah says to you, because it is from Isaac that your seed will take its name.
13And I will make a nation of the son of your servant-woman, because he is your seed.