Luke 1:7, 18, 36

But they had no children, because Elizabeth could not have a baby, and both of them were very old.

Zechariah said to the angel, “How can I know that what you say is true? I am an old man, and my wife is old, too.”

Now Elizabeth, your relative, is also pregnant with a son though she is very old. Everyone thought she could not have a baby, but she has been pregnant for six months.