John Wesley on Zechariah 6:13

The glory - Of both kingly and priestly office; the glory of both those crowns shall abide on him. Shall sit - Which speaks both his royal magnificence, and the perpetuity of it. A priest - The great high - priest, to offer the great sacrifice to God, to make reconciliation, to intercede for his people. The counsel of peace - The peace made for God's people shall rest upon these two, the kingly and priestly office of Christ; by his priestly office he shall make their peace with God, by his kingly office he shall deliver them from their spiritual enemies.