Luke 1:24-25
After those days, his wife Elizabeth became pregnant and she stayed in seclusion for five months, saying,
Luke 1:36
And consider this, your relative Elizabeth is also pregnant with a son in spite of her old age, and [even though] she was said to be unable to have children, she is now six months along.
Hebrews 11:11
By [having] faith, Sarah herself received the ability to have children, even though she was [sterile, being] past the age of child-bearing, since she considered God faithful to His promise. [Note: Some translations consider "Abraham" to be the subject of this highly controversial verse. See Lightfoot, pages 222-225].