Chapter III. Work of the Holy Spirit with respect unto the head of the new creation - the human nature of Christ.
The especial works of the Holy Spirit in the new creation — His work on the human nature of Christ — How this work could be, considering the union of the human nature unto and in the person of the Son of God — Assumption of the human nature into union, the only act of the person of the Son towards it — Personal union the only necessary consequent of this assumption — All other actings of the person of the Son in and on the human nature voluntary — The Holy Spirit the immediate efficient cause of all divine operations — -He is the Spirit of the Son or of the Father — How all the works of the Trinity are undivided — The body of Christ formed in the womb by the Holy Ghost, but of the substance of the blessed Virgin; why this was necessary — Christ not hence the Son of the Holy Ghost according to the human nature — Difference between the assumption of the human nature by the Son and the creation of it by the Holy Ghost — The conception of Christ, how ascribed to the Holy Ghost, and how to the blessed Virgin — Reasons of the espousal of the blessed Virgin to Joseph before the conception of Christ — The actual purity and holiness of the soul and body of Christ from his miraculous conception.
The dispensation and work of the Holy Ghost in this new creation respect, first, The Head of the church, the Lord Jesus Christ, in his human nature, as it was to be, and was, united unto the person of the Son of God. Secondly, It concerns the members of that mystical body in all that belongs unto them as such. And under these two heads we shall consider them.
First, therefore, we are to inquire what are the operations of the Holy Ghost in reference unto Jesus Christ, the Head of the church. And these were of two sorts:— 1. Such as whereof the person of Christ in his human nature was the immediate object. 2. Such as he performs towards others on his behalf; that is, with direct respect unto his person and office.
I. But yet, before we enter upon the first sort of his works which we shall begin withal, an objection of seeming weight and difficulty must be removed out of our way; which I shall the rather do because our answer unto it will make the whole matter treated of the more plain and familiar unto us. It may, therefore, be, and it is objected, “That whereas the human nature of Christ is assigned as the immediate object of these operations of the Holy Ghost, and that nature was immediately, inseparably, and undividedly united unto the person of the Son of God, there doth not seem to be any need, nor indeed room, for any such operations of the Spirit; for could not the Son of God himself, in his own person, perform all things requisite both for the forming, supporting, sanctifying, and preserving of his own nature, without the especial assistance of the Holy Ghost? nor is it easy to be understood how an immediate work of the Holy Ghost should be interposed, in the same person, between the one nature and the other.” And this seeming difficulty is vehemently pressed by the Socinians, who think to entangle our whole doctrine of the blessed Trinity and incarnation of the Son of God thereby. But express testimonies of Scripture, with the clear and evident analogy of faith, will carry us easily and safely through this seeming difficulty. To which end we may observe, that, —
1. The only singular immediate act of the person of the Son on the human nature was the assumption of it into subsistence with himself. Herein the Father and the Spirit had no interest nor concurrence, εἰ μὴ κατ’ εὐδοκίαν καὶ βούλησιν, “but by approbation and consent,” as Damascen speaks: for the Father did not assume the human nature, he was not incarnate; neither did the Holy Spirit do so; but this was the peculiar act and work of the Son. See John i. 14; Rom. i. 3; Gal. iv. 4; Phil. ii. 6, 7; Heb. ii. 14, 16; which places, with many others to the same purpose, I have elsewhere expounded, and vindicated from the exceptions of the Socinians.
2. That the only necessary consequent of this assumption of the human nature, or the incarnation of the Son of God, is the personal union of Christ, or the inseparable subsistence of the assumed nature in the person of the Son. This was necessary and indissoluble, so that it was not impeached nor shaken in the least by the temporary dissolution of that nature by the separation of the soul and body: for the union of the soul and body in Christ did not constitute him a person, that the dissolution of them should destroy his personality; but he was a person by the uniting of both unto the Son of God.