Luke 1:18

And Zacharias said to the angel, By what shall I know this? for I am old, and my wife far advanced in her age.

Luke 1:34

And Mary said, How shall this be, seeing I know not man?

Luke 1:7

And they had no child, because Elizabeth was barren, and both were far advanced in years.

Romans 4:19

And not being weak in faith, he regarded not his own body now deadened, being about an hundred years old, nor the deadness of Sarah's womb:

Treasury of Scripture Knowledge

Summary

And Zacharias said unto the angel, Whereby shall I know this? for I am an old man, and my wife well stricken in years.

Whereby

Bible References

Whereby

Luke 1:34
And Mary said, How shall this be, seeing I know not man?

For

Luke 1:7
And they had no child, because Elizabeth was barren, and both were far advanced in years.
Romans 4:19
And not being weak in faith, he regarded not his own body now deadened, being about an hundred years old, nor the deadness of Sarah's womb: