Book of Zechariah is also the name of a person, Zechariah.

For a dozen years or more, the task of rebuilding the temple has been half completed. Zechariah is commisioned by God to encourage the people in their unfinished responsibility. Rather then exhorting them to action with strong words of rebuke, Zechariah seeks to encourage them to action by reminding them of the future importance of the temple. The temple must be built, for one day the Messiah's glory will inhabit it. But future blessing is contingent upon present obedience. The people are not merely building a building; they are building the future. With that as their motivation, they can enter the building project with wholehearted zeal, for their Messiah is coming.

Zekar-yah means "Yahweh Remembers" or "Yahweh Has Remembered." This theme dominates the whole book: Israel will be blessed because Yahweh remembers the covenant He made with the fathers. The Greek and Latin version of his name is Zacharias.