In the opening chapter of Luke we read about 2 stories: The conception and birth of John the Baptist and the conception of Jesus by the Holy Spirit in Mary's womb.
Zechariah, a priest before God in
the temple was chosen to burn incense before the Lord and upon entering the
temple he was visited by the angel Gabriel. Gabriel told Zechariah that
he and his wife would conceive a child appointed by God to turn the children of
Israel back to Himself and "make ready for the Lord a people
prepared."
But here's prophetic part.
At
the crossroad of the supernatural power of God intersecting the Zechariah's
life and declaring a promise over him..the declaration is immediately measured
against an earthly impossibility: