The children of Judah and the children of Israel will be gathered together, and they will appoint themselves one head, and will go up from the land; for great will be the day of Jezreel.
But this passage clearly teaches, that the unity of men is of no account before God, except it originates from one head. Besides, it is well known that God set David over his ancient people until the coming of Christ. Now, then, the Church of the Lord is only rightly formed, when the true David rules over it; that is, when all with one consent obey Christ, and submit to his bidding, (pendebunt ab ejus nutu hang on his nod:) and how Christ designs to rule in his Church, we know; for the scepter of his kingdom is the gospel. Hence, when Christ is honored with the obedience of faith, all things are safe; and this is the happy state of the Church, of which the Prophet now speaks. It seems, indeed, strange, that what is peculiar to God should be transferred to men that is, to appoint a king. But the Prophet has, by this expression, characterized the obedience of faith; for it is not enough that Christ should be given as a king, and set over men, unless they also embrace him as their king, and with reverence receive him. We now learn, that when we believe the gospel we choose Christ for our king, as it were, by a voluntary consent. 