Zechariah is a book of prophecies of a contemporary of Haggai. Zechariah urges the people to rebuild the Temple for he too believes in the imminent coming of the messianic kingdom. Both Zechariah and Haggai are concerned with the messianic hope and establishing Judah’s role in the fulfillment of that glorious hope.

Zechariah 6

6:3 And in the third chariot white horses; and in the fourth chariot grisled and bay horses.