Even he shall build the temple of the LORD; and he shall bear the glory, and shall sit and rule upon his throne; and he shall be a priest upon his throne: and the counsel of peace shall be between them both. Even he shall build the temple - Joshua, not Zerubbabel.
He shall bear the glory - Have all the honor of it; for none can do this but himself. The Messiah is still intended.
And shall sit and rule upon his throne - For the government of the Church shall be upon his shoulder.
And he shall be a priest upon his throne - He shall, as the great high priest, offer the only available offering and atonement; and so he shall be both king and priest, a royal king and a royal priest; for even the priest is here stated to sit upon his throne.
And the counsel of peace shall be between them both - Whom? Zerubbabel and Joshua? Certainly not Zerubbabel, for he is not mentioned in all this prediction; but, as the Messiah is intended, the counsel of peace - the purpose to establish peace between heaven and earth, must be between the Father and the Son.