Galatians 4:22
for it is there written, Abraham had two sons, the one by a bond-maid, the other by a free-woman.
Hebrews 11:11
'Twas likewise through faith that Sara, though barren, received the power of becoming pregnant, and was delivered of a child when she was past age, because she judged him faithful who had promised.
Acts 7:8
at length he gave him the covenant of circumcision: accordingly Abraham circumcised his son Isaac eight days after he was born, Isaac was father of Jacob, who was father of the twelve patriarchs.
Luke 1:24-25
Some time after, Elizabeth his wife was pregnant, and went into retirement for five months.
Luke 1:36
even your cousin Elizabeth, as old as she is, is become pregnant with a son: she, who was stiled barren, is now in her sixth month;
Romans 9:9
for the words of the promise run thus, "at this time I will come, and Sara shall have a son."