New Defender's Study Bible Notes
6:1 two mountains. This eighth and last vision in the sequence of visions given to Zechariah, evidently all on the same night, climaxes the others by indicating that God is sending out His heavenly hosts to assure that the prophecies of the first seven will be fulfilled. Both the promised blessings on Israel and the judgments on the nations are sure to be accomplished. Although the promises came forth from God’s heavenly throne, they appear in the vision as emanating from His promised future earthly throne in Jerusalem, between two “mountains of brass”—that is, mountains of great value.
6:3 grisled. That is, “gray-colored.”
6:5 four spirits. These “spirits” are angels (Psalm 104:4), possibly the four angels mentioned in either Revelation 7:1 or 9:14. Like the “two anointed ones” that “stand by the Lord of the whole earth” (Zechariah 4:14), they await the exact time when God sends them forth. That they are angels of judgment is shown by the symbol of chariots and horses.
6:7 the bay. “Bay” should actually read “strong,” and may refer to the “red horses” which are mentioned in Zechariah 6:2, but not Zechariah 6:6-7. The color red may have been deleted to indicate that God will make all war and bloodshed to cease when He restores Israel (Micah 4:1-3).
6:7 walked to and fro. Three times it is stressed that the “strong” horses will “walk to and fro through the earth,” indicating that God will assuredly see that His will is accomplished everywhere, even in the areas still under Babylon’s influence.