God said,“No, Sarah your wife is going to bear you a son, and you will name him Isaac. I will confirm my covenant with him as a perpetual covenant for his descendants after him.
TSK
TSK · Genesis 21:2
مراجع Treasury of Scripture Knowledge في NET.
One of them said,“I will surely return to you when the season comes round again, and your wife Sarah will have a son!”(Now Sarah was listening at the entrance to the tent, not far behind him.
but I took your father Abraham from beyond the Euphrates and brought him into the entire land of Canaan. I made his descendants numerous; I gave him Isaac,
After some time his wife Elizabeth became pregnant, and for five months she kept herself in seclusion. She said,
Then God gave Abraham the covenant of circumcision, and so he became the father of Isaac and circumcised him when he was eight days old, and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.
For it is written that Abraham had two sons, one by the slave woman and the other by the free woman.