Chapter 6
V.1-8 The four horses possibly represent the four world Empires. The red horse (Babylon); black horse (Medes and Persians, then existing); white horse (Greece); grizzled and gray horse (Romans).
V.9-15 Christ as the Branch is again brought in. He will build the temple of the Lord and then sit upon His throne; and rule as King and Priest.
V.13 Speaks of the Lord in a future day as King and Priest.
Chapter 7
Things change from this chapter on. The Lord now speaks to the conscience of the people that had come back to Jerusalem. It will be harder to understand, so take it slowly.
V.3 Refers to when Jerusalem had been destroyed seventy years before (2 Kings 25:8).
V.5 The Lord asks them if they really fasted and mourned when they had been in Babylon, about the destroyed condition of Jerusalem.
V.8-14 God reminds them that they had been scattered for their sins. But were they listening?