Luke 1:18

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 1:34

Then said Mary to the angel, How can this be, since I am a virgin?

Luke 1:7

And they had no child, for Elisabeth was barren; and they were both far advanced in years.

Romans 4:19

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.

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
Then said Mary to the angel, How can this be, since I am a virgin?

For

Luke 1:7
And they had no child, for Elisabeth was barren; and they were both far advanced in years.
Romans 4:19
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.