18 And Zakaria said to the angel, How shall I know this? for I am old, and my wife many in her days.
Luke 1:18 Cross References - Etheridge
Luke 1:7
7 But they had no son because Elishaba was barren, and both had become many in their days.
Luke 1:34
34 And Mariam said to the angel, How shall this be, because a man is not known to me?
Romans 4:19
19 Nor was he weak in his faith, while considering his body dead, (for he was the son of an hundred years,) and the dead womb of Sara;