7 She also said, “Who would have told Abraham that Sarah would nurse children? Yet I have borne a son for him in his old age.”
8 The child grew and was weaned, and Abraham held a great feast on the day Isaac was weaned.
9 But Sarah saw the son mocking — the one Hagar the Egyptian had borne to Abraham.
10 So she said to Abraham, “Drive out this slave with her son, for the son of this slave will not be a coheir with my son Isaac! ”
11 Now this was a very difficult thing for Abraham because of his son.
12 But God said to Abraham, “Do not be concerned about the boy and your slave. Whatever Sarah says to you, listen to her, because your offspring will be traced through Isaac.
13 But I will also make a nation of the slave’s son because he is your offspring.”