Galatians 4:22
For it is written that Abraham had two sons, one by the slave and one by the free woman.
Hebrews 11:11
By faith Sarah herself received power to conceive, even when she was past the age, because she considered him faithful who had promised.
Acts 7:8
And he gave him the covenant of circumcision. And so Abraham became the father of Isaac, and circumcised him on the eighth day; and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.
Luke 1:24-25
After these days his wife Elizabeth conceived, and for five months she hid herself, saying,
Luke 1:36
And behold, your relative Elizabeth in her old age has also conceived a son; and this is the sixth month with her who was called barren.
Romans 9:9
For this is what the promise said: "About this time I will return and Sarah shall have a son."