Isaac’s Birth and Circumcision

21:1-7

21 Then Yahweh blessed Sarah just as he had said he would. Yes, he did for her exactly what he had promised to do. 2 So Sarah became pregnant and at the time God had appointed, she gave birth to a son for Abraham when he was old, just as God had promised him that she would. 3 Then Abraham named his son Isaac, the son whom Sarah had given birth to. 4 Also, when Isaac was eight days old, Abraham circumcised him, which was exactly what God had commanded him to do.

5 Abraham was 100 years old when his son Isaac was born. 6 When he was born, Sarah exclaimed, “God has made me laugh for joy! Everyone who hears about this will laugh for joy with me!” 7 She also exclaimed, “No one would have even thought of telling Abraham that I would have children. Yet I have given birth to a son for him when he is old!”