4. Another reason assigned for this, is, that he might give his Spirit to his people. It is necessary that redemption should be applied, as well as purchased; and that the same Person, as a peculiar branch of glory due to him, should perform the one as well as the other; and, in the application of redemption, it was necessary that the Spirit should be glorified, that hereby he might appear to be a divine Person; and, as he acts herein in subserviency to the Mediator’s glory, as has been before observed[133], he is said to be sent by him, which he could not have been, had not Christ had a divine nature, in which respect he was equal with him; nor could he be said to give that which the Spirit works, as he promised to do, when he told his disciples, _If I depart, I will send him unto you_, John xvi. 7. 5. It was necessary that Christ should be God, that he might conquer all our enemies, and so remove every thing out of the way that tends to oppose his name, interest, and glory; these are sin, Satan, the world, and death. Sin, which is opposite to the holiness of God, is that which spirits, excites, and gives being to all opposition there is against him, either in earth or hell, and endeavours to eclipse his glory, controul his sovereignty, and reflect dishonour on all his perfections. This must be subdued by Christ, so _that it may no longer have dominion_ over his people, Rom. vi. 14. and, in order hereunto, its condemning power must be taken away, by his making satisfaction for it, as our great High Priest; and also its enslaving power subdued by the efficacy of his grace, in the internal work of sanctification. And, upon his having obtained this victory over sin, Satan is also conquered when his prisoners are brought from under his power; and he finds himself for ever disappointed, and not able to detain those, who were, at first, led captive by him, nor to defeat the purpose of God relating to the salvation of his elect, or to boast as though he had wrested the sceptre out of his hand, or robbed him of one branch of his glory. Moreover, the world, which is reckoned among the number of God’s enemies, must be conquered inasmuch as it opposes his name and interest in an objective way, from whence corrupt nature takes occasion either to abuse the various gifts and dispensations of providence, or by contracting an intimacy with those who are enemies to God and religion, to become more like them, as the apostle says, _The friendship of the world is enmity with God_, James iv. 4. Now Christ must be God, that he may discover its snares, and enable his people to improve the good things of providence to his glory, and over-rule the evil things thereof for their good.