18 And Zacharias said unto the angel, Whereby shall I know this? for I am an old man, and my wife far advanced in years.
Luke 1:18 Cross References - Worsley
Luke 1:7
7 And they had no child, for Elisabeth was barren; and they were both far advanced in years.
Luke 1:34
34 Then said Mary to the angel, How can this be, since I am a virgin?
Romans 4:19
19 And not being weak in faith, he considered not his own body now dead, being about an hundred years old; nor the deadness of Sarah's womb.