²¹ But my covenant^(A) I will establish with Isaac, whom Sarah will bear to you^(B) by this time next year.”^(C)

⁸ Then he gave Abraham the covenant of circumcision.^(A) And Abraham became the father of Isaac and circumcised him eight days after his birth.^(B) Later Isaac became the father of Jacob,^(C) and Jacob became the father of the twelve patriarchs.^(D)

²² For it is written that Abraham had two sons, one by the slave woman^(A) and the other by the free woman.^(B)

¹¹ And by faith even Sarah, who was past childbearing age,^(A) was enabled to bear children^(B) because she^[a] considered him faithful^(C) who had made the promise.