Galatians 4:22
For it is written, that Abraham had two sons; the one by the bondwoman, the other by the freewoman.
Hebrews 11:11
Through faith Sarah herself also received power to conceive, even when she was past age, because she accounted him faithful who had promised.
Acts 7:8
And he gave him the covenant of circumcision; and so he begat Isaac, and circumcised him on the eighth day; and Isaac begat Jacob, and Jacob the twelve patriarchs.
Luke 1:24-25
And after those days his wife Elizabeth conceived, and hid herself five months, saying,
Luke 1:36
And lo! Elizabeth, thy kinswoman, she also hath conceived a son in her old age; and this is the sixth month with her who is called barren.
Romans 9:9
For the word of promise is this: "At this time I will come, and Sarah shall have a son."