Galatians 4:22
For it is written, that Abraham had two sons, one by a servant woman, and the other by a free woman.
Hebrews 11:11
By faith also Sarah herself received power to become a mother, even beyond the usual age, because she regarded him faithful that promised.
Acts 7:8
And he gave him the ordinance of circumcision; and so he begat Isaac and circumcised him on the eighth day, and Isaac, Jacob, and Jacob the twelve patriarchs.
Luke 1:24-25
And after these days Elizabeth his wife became pregnant, and hid herself five months, saying,
Luke 1:36
And behold Elizabeth, your relative, even she is pregnant with a son in her old age, and this is the sixth month to her called barren;
Romans 9:9
For this was the word of promise; According to this time I will come, and Sarah shall have a son.