3. The wisdom of God is seen in the two natures of Christ, whereby this redemption was accomplished. The union of the two natures was the foundation of the union of God and the fallen creature.

1st. The union itself is admirable: “The Word is made flesh” (John i. 14), one “equal with God in the form of a servant” (Phil. ii. 7). When the apostle speaks of “God manifested in the flesh,” he speaks “the wisdom of God in a mystery” (1 Tim. iii. 16); that which is incomprehensible to the angels, which they never imagined before it was revealed, which perhaps they never knew till they beheld it. I am sure, under the law, the figures of the cherubims were placed in the sanctuary, with their “faces looking towards the propitiatory,” in a perpetual posture of contemplation and admiration (Exod. xxxvii. 9), to which the apostle alludes (1 Pet. i. 12). Mysteriousis the wisdom of God to unite finite and infinite, almightiness and weakness, immortality and mortality, immutability, with a thing subject to change; to have a nature from eternity, and yet a nature subject to the revolutions of time; a nature to make a law, and a nature to be subjected to the law; to be God blessed forever, in the bosom of his Father, and an infant exposed to calamities from the womb of his mother: terms seeming most distant from union, most uncapable of conjunction, to shake hands together, to be most intimately conjoined; glory and vileness, fulness and emptiness, heaven and earth; the creature with the Creator; he that made all things, in one person with a nature that is made; Immanuel, God, and man in one; that which is most spiritual to partake of that which is carnal flesh and blood (Heb. ii. 14); one with the Father in his Godhead, one with us in his manhood; the Godhead to be in him in the fullest perfection, and the manhood in the greatest purity; the creature one with the Creator, and the Creator one with the creature. Thus is the incomprehensible wisdom of God declared in the “Word being made flesh.”

2d. In the manner of this union. A union of two natures, yet no natural union.It transcends all the unions visible among creatures:[793] it is not like the union of stones in a building, or two pieces of timber fastened together, which touch one another only in their superficies and outside, without any intimacy with one another. By such a kind of union God would not be a man: the Word could not so be made flesh. Nor is it a union of parts to the whole, as the members and the body; the members are parts, the body is the whole; for the whole results from the parts, and depends upon the parts: but Christ, being God, is independent upon anything. The parts are in order of nature before the whole, but nothing can be in order of nature before God. Nor is it as the union of two liquors, as when wine and water are mixed together, for they are so incorporated as not to be distinguished from one another; no man can tell which particle is wine, and which is water. But the properties of the Divine nature are distinguishable from the properties of the human. Nor is it as the union of the soul and body, so as that the Deity is the form of the humanity, as the soul is the form of the body: for as the soul is but a part of the man, so the Divinity would be then but a part of the humanity; and as a form, or the soul, is in a state of imperfection, without that which it is to inform, so the Divinity of Christ would have been imperfect till it had assumed the humanity, and so the perfection of an eternal Deity would have depended on a creature of time. This union of two natures in Christ is incomprehensible: and it is a mystery we cannot arrive to the top of, how the Divine nature, which is the same with that of the Father and the Holy Ghost, should be united to the human nature, without its being said that the Father and the Holy Ghost were united to the flesh; but the Scripture doth not encourage any such notion; it speaks only of the Word, the person of the Word being made flesh, and in his being made flesh, distinguisheth him from the Father, as “theonly begotten of the Father” (John i. 14). The person of the Son was the term of this union.

(1.) This union doth not confound the properties of the Deity and those of the humanity. They remain distinct and entire in each other. The Deity is not changed into flesh, nor the flesh transformed into God: they are distinct, and yet united; they are conjoined, and yet unmixed: the dues of either nature are preserved. It is impossible that the majesty of the Divinity can receive an alteration. It is as impossible that the meanness of the humanity can receive the impressions of the Deity, so as to be changed into it, and a creature be metamorphosed into the Creator, and temporary flesh become eternal, and finite mount up into infinity: as the soul and body are united, and make one person, yet the soul is not changed into the perfections of the body, nor the body into the perfections of the soul. There is a change made in the humanity, by being advanced to a more excellent union, but not in the Deity, as a change is made in the air, when it is enlightened by the sun, not in the sun, which communicates that brightness to the air. Athanasius makes the burning bush to be a type of Christ’s incarnation (Exod. iii. 2): the fire signifying the Divine nature, and the bush the human. The bush is a branch springing up from the earth, and the fire descends from heaven; as the bush was united to the fire, yet was not hurt by the flame, nor converted into fire, there remained a difference between the bush and the fire, yet the properties of the fire shined in the bush, so that the whole bush seemed to be on fire. So in the incarnation of Christ, the human nature is not swallowed up by the Divine, nor changed into it, nor confounded with it, but so united, that the properties of both remain firm: two are so become one, that they remain two still: one person in two natures, containing the glorious perfections of the Divine, and the weaknesses of the human. The “fulness of the Deity dwells bodily in Christ” (Col. ii. 9).

(2.) The Divine nature is united to every part of the humanity. The whole Divinity to the whole humanity; so that no part but may be said to be the member of God, as well as the blood is said to be the “blood of God” (Acts xx. 28). By the same reason, it may be said, the hand of God, the eye of God, the arm of God. As God is infinitely present everywhere, so as to be excluded from no place, so is the Deity hypostatically everywhere in the humanity, not excluded from any part of it; as the light of the sun in every part of the air; as a sparkling splendor in every part of the diamond. Therefore, it is concluded, by all that acknowledge the Deity of Christ, that when his soul was separated from the body, the Deity remained united both to soul and body, as light doth in every part of a broken crystal.

(3.) Therefore, perpetually united (Col. ii. 9). The “fulness of the Godhead dwells in him bodily.” It dwells in him, not lodges in him, as a traveller in an inn: it resides in him as a fixed habitation. As God describes the perpetuity of his presence in the ark by his habitation or dwelling in it (Exod. xxix. 44), so doth the apostle the inseparable duration of the Deity in the humanity, and the indissoluble union of the humanity with the Deity. It was united on earth;it remains united in heaven. It was not an image or an apparition, as the tongues wherein the Spirit came upon the apostles, were a temporary representation, not a thing united perpetually to the person of the Holy Ghost.

(4.) It was a personal union. It was not an union of persons, though it was a personal union; so Davenant expounds (Col. ii. 9), Christ did not take the person of man, but the nature of man into subsistence with himself. The body and soul of Christ were not united in themselves, had no subsistence in themselves, till they were united to the person of the Son of God. If the person of a man were united to him, the human nature would have been the nature of the person so united to him, and not the nature of the Son of God (Heb. ii. 14, 16), “Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil. For verily he took not on him the nature of angels; but he took on him the seed of Abraham.” He took flesh and blood to be his own nature, perpetually to subsist in the person of the Λόγος, which must be by a personal union, or no way: the Deity united to the humanity, and both natures to be one person. This is the mysterious and manifold wisdom of God.

3d. The end of this union.

(1.) He was hereby fitted to be a Mediator. He hath something like to man, and something like to God. If he were in all things only like to man, he would be at a distance from God: if he were in all things only like to God, he would be at a distance from man. He is a true Mediator between mortal sinners and the immortal righteous One. He was near to us by the infirmities of our nature, and near to God by the perfections of the Divine; as near to God in his nature, as to us in ours; as near to us in our nature, as he is to God in the Divine. Nothing that belongs to the Deity, but he possesses; nothing that belongs to the human nature, but he is clothed with. He had both the nature which had offended, and that nature which was offended: a nature to please God, and a nature to pleasure us: a nature, whereby he experimentally knew the excellency of God, which was injured, and understood the glory due to him, and consequently the greatness of the offence, which was to be measured by the dignity of his person: and a nature whereby he might be sensible of the miseries contracted by, and endure the calamities due to the offender, that he might both have compassion on him, and make due satisfaction for him.He had two distinct natures capable of the affections and sentiments of the two persons he was to accord; he was a just judge of the rights of the one, and the demerit of the other.[794] He could not have this full and perfect understanding if he did not possess the perfections of the one, and the qualities of the other; the one fitted him for “things appertaining to God” (Heb. v. 1), and the other furnished him with a sense of the “infirmities of man” (Heb. iv. 15).

(2.) He was hereby fitted for the working out the happiness of man. A Divine nature to communicate to man, and a human natureto carry up to God. [1.] He had a nature whereby to suffer for us, and a nature whereby to be meritorious in those sufferings. A nature to make him capable to bear the penalty, and a nature to make his sufferings sufficient for all that embraced him. A nature, capable to be exposed to the flames of Divine wrath, and another nature, incapable to be crushed by the weight, or consumed by the heat of it: a human nature to suffer, and stand a sacrifice in the stead of man; a Divine nature to sanctify these sufferings, and fill the nostrils of God with a sweet savor, and thereby atone his wrath: the one to bear the stroke due to us, and the other to add merit to his sufferings for us. Had he not been man, he could not have filled our place in suffering; and could he otherwise have suffered, his sufferings had not been applicable to us; and had he not been God, his sufferings had not been meritoriously and fruitfully applicable. Had not his blood been the blood of God, it had been of as little advantage as the blood of an ordinary man, or the blood of the legal sacrifices (Heb. ix. 12). Nothing less than God could have satisfied God for the injury done by man. Nothing less than God could have countervailed the torments due to the offending creature. Nothing less than God could have rescued us out of the hands of the jailor, too powerful for us. [2.] He had, therefore, a nature to be compassionate to us, and victorious for us. A nature sensibly to compassionate us, and another nature, to render those compassions effectual for our relief; he had the compassions of our nature to pity us, and the patience of the Divine nature to bear with us. He hath the affections of a man to us, and the power of a God for us: a nature to disarm the devil for us, and another nature to be insensible of the working of the devil in us, and against us. If he had been only God, he would not have had an experimental sense of our misery; and if he had been only man, he could not have vanquished our enemies; had he been only God, he could not have died; and had he been only man, he could not have conquered death. [3.] A nature efficaciously to instruct us. As man, he was to instruct us sensibly; as God, he was to instruct us infallibly. A nature, whereby he might converse with us, and a nature, whereby he might influence us in those converses. A human mouth to minister instruction to man, and a Divine power to imprint it with efficacy.[4.] A nature to be a pattern to us. A pattern of grace as man, as Adam was to have been to his posterity:[795] a Divine nature shining in the human, the image of the invisible God in the glass of our flesh, that he might be a perfect copy for our imitation (Col. i. 15), “The image of the invisible God, and the first‑born of every creature” in conjunction. The virtues of the Deity are sweetened and tempered by the union with the humanity, as the beams of the son are by shining through a colored glass, which condescends more to the weakness of our eye. Thus the perfections of the invisible God, breaking through the first‑born of every creature, glittering in Christ’s created state, became more sensible for contemplation by our mind, and more imitiable for conformity in our practice. [5.] A nature to be a ground of confidence in our approach to God. A nature wherein we may behold him, and wherein we may approachto him. A nature for our comfort, and a nature for our confidence. Had he been only man, he had been too feeble to assure us; and had he been only God, he had been too high to attract us: but now we are allured by his human nature, and assured by his Divine, in our drawing near to heaven. Communion with God was desired by us, but our guilt stifled our hopes, and the infinite excellency of the Divine nature would have damped our hopes of speeding; but since these two natures, so far distant, are met in a marriage‑knot, we have a ground of hope, nay, an earnest, that the Creator and believing creature shall meet and converse together. And since our sins are expatiated by the death of the human nature in conjunction with the Divine, our guilt, upon believing, shall not hinder us from this comfortable approach. Had he been only man, he could not have assured us an approach to God: had he been only God, his justice would not have admitted us to approach to him; he had been too terrible for guilty persons, and too holy for polluted persons to come near to him: but by being made man, his justice is tempered, and by his being God and man, his mercy is ensured. A human nature he had, one with us, that we might be related to God, as one with him. [6.] A nature to derive all good to us. Had he not been man, we had had no share or part in him: a satisfaction by him had not been imputed to us. If he were not God, he could not communicate to us divine graces and eternal happiness; he could not have had power to convey so great a good to us, had he been only man; and he could not have done it, according to the rule of inflexible righteousness, had he been only God. As man, he is the way of conveyance; as God, he is the spring of conveyance. From this grace of union, and the grace of unction, we find rivers of waters flowing to make glad the city of God. Believers are his branches, and draw sap from him, as he is their root in his human nature, and have an endless duration of it from his Divine. Had he not been man, he had not been in a state to obey the law; had he not been God as well as man, his obedience could not have been valuable to be imputed to us. How should this mystery be studied by us, which would afford us both admiration and content! Admiration, in the incomprehensibleness of it; contentment, in the fitness of the Mediator. By this wisdom of God we receive the props of our faith, and the fruits of joy and peace. Wisdom consists in choosing fit means, and conducting them in such a method, as may reach with good success the variety of marks which are aimed at. Thus hath the wisdom of God set forth a Mediator, suited to our wants, fitted for our supplies, and ordered so the whole affair by the union of these two natures in the person of the Redeemer, that there could be no disappointment, by all the bustle hell and hellish instruments could raise against it.