1st, That it was at that time when God had sufficiently tried the faith of the Old Testament-church, in waiting for his coming, and thereby glorified his sovereignty, who hath the times and seasons of his bestowing all blessings in his own power.
2dly, It was at that time when the measure of the iniquity of the world was abundantly filled, whereby his people might observe the deplorable state into which sin had brought mankind, and the utter impossibility of our recovery without a Mediator, and that the light of nature could not discover any method by which the redemption and salvation of man might be brought about.
3dly, It was at that time that the Jewish church was at the lowest ebb, and therefore the most seasonable time, and they were laid under the highest obligations to adore and magnify him: their political state was broken, the sceptre departed from Judah, and they were brought under the Roman yoke, which sat very uneasy upon them; neither could they ever expect to make that figure in the world as they once had done, therefore now was the time for the Messiah to come, and erect his kingdom. And, besides this, they were given up to a very great degree of judicial blindness and hardness, and were disposed to make void the law of God by their traditions; so that religion, among them, was at a very low ebb; therefore it was the fittest time for God to display his grace, in reviving his work, and preventing his cause and interest from wholly sinking in the world. This was the time in which the Son of God became Man.
(2.) Christ shall continue to be God and Man for ever, or the union of these two natures is indissoluble: as to his divine nature, he is necessarily eternal and unchangeable; and the human nature shall continue for ever united to it, as the result of the divine purpose, in which God intends that some ends, glorious to himself, honourable to the Mediator, and advantageous to his people, should be attained thereby. For,
1st, If he had had a design to lay aside his human nature, he would have done it when he finished his work of obedience and sufferings therein, and thereby had so far answered the end of his incarnation, that nothing more was necessary for the purchase of redemption: but when he rose from the dead, as a Conqueror over death and hell, and was declared to have accomplished the work he came into the world about, it is certain he did not lay it aside, but ascended visibly into heaven, and shall come again, in a visible manner, in that same nature, to judge the world at the last day.
2dly, The eternity of Christ’s human nature appears from the eternity of his mediatorial kingdom, of which more under a following answer, when we come to speak concerning the glory of Christ’s kingly office. It appears, also, from the eternity of his intercession, which, as the apostle expresses it, He ever liveth to make, Heb. vii. 25. for his people: thus he does, by appearing in the human nature in the presence of God, in their behalf; therefore he must for ever have an human nature.
3dly, His saints shall abide for ever in heaven, and, as the apostle says, Shall ever be with the Lord, 1 Thess. iv. 17. and their happiness shall continue both as to soul and body; and, with respect to their bodies, it is said, they shall be fashioned like unto Christ’s glorious body, Phil. iii. 21. therefore his glorious body, or his human nature, shall continue for ever united to his divine Person.
4thly, His retaining his human nature for ever, seems necessary, as it redounds to the glory of God: it is an eternal monument of his love to mankind, and an external means to draw forth their love to him, who procured those mansions of glory, which they shall for ever be possessed of, by what he did and suffered for them therein.
Quest. XXXVIII., XXXIX., XL.
Quest. XXXVIII. Why was it requisite that the Mediator should be God?