He continues the same subject. The meaning is, that God begins nothing which he does not determine to bring to its end. Since then he had already begun to gather his people, that they might dwell in the Holy Land, it was a work in progress, at length to be completed; for the Lord's will was not to be a half Redeemer. This is the purport of what the Prophet says.

But he now exhorts Sion to rejoice, as though the happiness which he predicts was already enjoyed. This mode of speaking, as we have seen elsewhere, is common among the Prophets. When they intended to animate God's servants to a greater confidence, they brought them as it were into the midst of what was promised, and dictated a song of thanksgiving. We are not wont to congratulate ourselves before the time. When, therefore, the Prophets bade the Church to sing to God and to give thanks, they thus confirmed the promises made to them; as though the Prophet had said, that as yet indeed the brightness and glory of God was in a great measure laid, but that the faithful were beyond the reach of danger, and that therefore they could boldly join in a song of thanks to God, as though they were already enjoying full redemption; for the Lord will perfect what he begins.

Rejoice then and exult, thou daughter of Sion, -- Why? For I come. God had already come; but here he expresses the progress of his favor, by declaring that he would come; as though he had said, "I have already given you obscure tokens of my presence; but you shall find another coming which will be much more effectual to confirm your faith." Though then God had already appeared to the Jews, yet he says that he would come, that is, when Christ would come forth, in whom dwells the fullness of the Godhead bodily, and in whom God's perfect glory and majesty shines forth. And hence also does it more evidently appear what I have already said, that this address cannot be applied without perversion to the Prophet, nor be suitably applied to the person of the Father. It then follows that Christ speaks here: but he does not speak as a man or an angel; he speaks as God the Redeemer. We hence see that the name Jehovah is appropriated to Christ, and that there is no difference between the Father and the Son as to essence, but that they are only to be distinguished as to their persons. Whenever then Christ announces his own divinity, he takes the name Jehovah; but he also shows, that there is something peculiar and distinct belonging to him as the messenger of the Father. For this reason, and in this respect, he is inferior to the Father; that is, because he is sent as a messenger, and executes what has been entrusted to him. These things do not militate the one against the other, as many unlearned and turbulent men think, who entangle themselves in many vain imaginations, or rather in mere ravings, and say, "How can it be, that there is one eternal God, and yet that Christ, who is distinct from the Father, and is called his angel, is a true God?" So they imagine that the origin of divinity is God the Father, as though the one true God had begotten, and thus produced another God from himself, as by propagation. But these are diabolical figments, by which the unity of the Divine essence is destroyed. Let us then bear in mind what the Prophet teaches here clearly and plainly, -- that Christ is Jehovah, the only true God, and yet that he is sent by God as a Mediator.

Behold I come, he says, and I will dwell in the midst of thee. God dwelt then among the Jews, for the building of the temple had been begun, and sacrifices had been already offered; but this dwelling was typical only. It hence follows, that some new kind of presence is here pointed out, when God was to reveal himself to his people, not under ceremonial figures and symbols, but by dwelling, at the fullness of time, substantially among them; for Christ is the temple of the Godhead, and so perfectly unites us to God the Father, that we are one with him. And it ought further to be carefully borne in mind, that the Prophet does here also make a distinction between the ancient types of the law and the reality, which was at length exhibited in Christ; for there is no need now of shadows, when we enjoy the reality, and possess the completion of all those things which God only shadowed forth under the law.