How Two Natures Constitute the Person of the Mediator

When it is said that the Word was made flesh, we must not understand it as if he were either changed into flesh, or confusedly intermingled with flesh, but that he made choice of the Virgin’s womb as a temple in which he might dwell. He who was the Son of God became the Son of man, not by confusion of substance, but by unity of person. For we maintain, that the divinity was so conjoined and united with the humanity, that the entire properties of each nature remain entire, and yet the two natures constitute only one Christ. If, in human affairs, any thing analogous to this great mystery can be found, the most apposite similitude Augustine employs the same similitude, Epist. 52.

Little dependence could be placed on these statements, were it not proved by numerous passages throughout the sacred volume that none of them is of man’s devising. What Christ said of himself, “Before Abraham was I am,” ( John 8:58 ), was very foreign to his humanity. I am not unaware of the cavil by which erroneous spirits distort this passage—viz. that he was before all ages, inasmuch as he was foreknown as the Redeemer, as well in the counsel of the Father as in the minds of believers. But seeing he plainly distinguishes the period of his manifestation from his eternal existence, and professedly founds on his ancient government, to prove his precedence to Abraham, he undoubtedly claims for himself the peculiar attributes of divinity. Paul’s assertion that he is “the first-born of every creature,” that “he is before all things, and by him all things consist,” ( Col. 1:15 , 17 ); his own declaration, that he had glory with the Father before the world was, and that he worketh together with the Father, are equally inapplicable to man. These and similar properties must be specially assigned to his divinity. Again, his being called the servant of the Father, his being said to grow in stature, and wisdom, and favour with God and man, not to seek his own glory, not to know the last day, not to speak of himself, not to do his own will, his being seen and handled, Isiah 41:1, &c.; John 5:17 ; Luke 2:52 ; John 8:50 ; Mark 13:32 ; John 14:10 ; 6:38; Luke 24:39 .

But, above all, the true substance of Christ is most clearly declared in those passages which comprehend both natures at once. Numbers of these exist in the Gospel of John. What we there read as to his having received power from the Father to forgive sins; as to his quickening whom he will; as to his bestowing righteousness, holiness, and salvation; as to his being appointed judge both of the quick and the dead; as to his being honoured even as the Father, John 1:29 ; 5:21—23; 9:5; 10:9—11; 15:1.

VideCalv. Epist. ad Polonos adversus Stancarum.

This observation, if the readers apply it properly, will be of no small use in solving a vast number of difficulties. For it is strange how the ignorant, nay, some who are not altogether without learning, are perplexed by these modes of expression which they see applied to Christ, without being properly adapted either to his divinity or his humanity, not considering their accordance with the character in which he was manifested as God and man, and with his office of Mediator. It is very easy to see how beautifully they accord with each other, provided they have a sober interpreter, one who examines these great mysteries with the reverence which is meet. But there is nothing which furious and frantic spirits cannot throw into confusion. See August. in Enchir. ad Laurent. c. 36.

But in our age, also, has arisen a not less fatal monster, Michael Servetus, who for the Son of God has substituted a figment composed of the essence of God, spirit, flesh, and three untreated elements. First, indeed, he denies that Christ is the Son of God, for any other reason than because he was begotten in the womb of the Virgin by the Holy Spirit. The tendency of this crafty device is to make out, by destroying the distinction of the two natures, that Christ is somewhat composed of God and man, and yet is not to be deemed God and man. His aim throughout is to establish, that before Christ was manifested in the flesh there were only shadowy figures in God, the truth or effect of which existed for the first time, when the Word who had been destined to that honour truly began to be the Son of God. We indeed acknowledge that the Mediator who was born of the Virgin is properly the Son of God. And how could the man Christ be a mirror of the inestimable grace of God, had not the dignity been conferred upon him both of being and of being called the only-begotten Son of God? Meanwhile, however, the definition of the Church stands unmoved, that he is accounted the Son of God, because the Word begotten by the Father before all ages assumed human nature by hypostatic union,—a term used by ancient writers to denote the union which of two natures constitutes one person, and invented to refute the dream of Nestorius, who pretended that the Son of God dwelt in the flesh in such a manner as not to be at the same time man. Servetus calumniously charges us with making the Son of God double, when we say that the eternal Word before he was clothed with flesh was already the Son of God: as if we said anything more than that he was manifested in the flesh. Although he was God before he became man, he did not therefore begin to be a new God. Nor is there any greater absurdity in holding that the Son of God, who by eternal generation ever had the property of being a Son, appeared in the flesh. This is intimated by the angel’s word to Mary: “That holy thing which shall be born of thee shall be called the Son of God,” ( Luke 1:35 ); as if he had said that the name of Son, which was more obscure under the law, would become celebrated and universally known. Corresponding to this is the passage of Paul, that being now the sons of God by Christ, we “have received the Spirit of adoption, whereby we cry, Abba, Father,” ( Rom. 8:15 ). Were not also the holy patriarchs of old reckoned among the sons of God? Yea, trusting to this privilege, they invoked God as their Father. But because ever since the only-begotten Son of God came forth into the world, his celestial paternity has been more clearly manifested, Paul assigns this to the kingdom of Christ as its distinguishing feature. We must, however, constantly hold, that God never was a Father to angels and men save in respect of his only-begotten Son: that men, especially, who by their iniquity were rendered hateful to God, are sons by gratuitous adoption, because he is a Son by nature. Nor is there anything in the assertion of Servetus, that this depends on the filiation which God had decreed with himself. Here we deal not with figures, as expiation by the blood of beasts was shown to be; but since they could not be the sons of God in reality, unless their adoption was founded in the head, it is against all reason to deprive the head of that which is common to the members. I go farther: since the Scripture gives the name of sons of God to the angels, whose great dignity in this respect depended not on the future redemption, Christ must in order take precedence of them that he may reconcile the Father to them. I will again briefly repeat and add the same thing concerning the human race. Since angels as well as men were at first created on the condition that God should be the common Father of both; if it is true, as Paul says, that Christ always was the head, “the first-born of every creature—that in all things he might have the pre-eminence,” ( Col. 1:15 , 18 ), I think I may legitimately infer, that he existed as the Son of God before the creation of the world.

But if his filiation (if I may so express it) had a beginning at the time when he was manifested in the flesh, it follows that he was a Son in respect of human nature also. Servetus, and others similarly frenzied, hold that Christ who appeared in the flesh is the Son of God, inasmuch as but for his incarnation he could not have possessed this name. Let them now answer me, whether, according to both natures, and in respect of both, he is a Son? So indeed they prate; but Paul’s doctrine is very different. We acknowledge, indeed, that Christ in human nature is called a Son, not like believers by gratuitous adoption merely, but the true, natural, and, therefore, only Son, this being the mark which distinguishes him from all others. Those of us who are regenerated to a new life God honours with the name of sons; the name of true and only-begotten Son he bestows on Christ alone. But how is he an only Son in so great a multitude of brethren, except that he possesses by nature what we acquire by gift? This honour we extend to his whole character of Mediator, so that He who was born of a Virgin, and on the cross offered himself in sacrifice to the Father, is truly and properly the Son of God; but still in respect of his Godhead: as Paul teaches when he says, that he was “separated unto the gospel of God (which he had promised afore by his prophets in the Holy Scriptures), concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh; and declared to be the Son of God with power,” ( Rom. 1:1–4 ). When distinctly calling him the Son of David according to the flesh, why should he also say that he was “declared to be the Son of God,” if he meant not to intimate, that this depended on something else than his incarnation? For in the same sense in which he elsewhere says, that “though he was crucified through weakness, yet he liveth by the power of God,” ( 2 Cor. 13:4 ), so he now draws a distinction between the two natures. They must certainly admit, that as on account of his mother he is called the Son of David, so, on account of his Father, he is the Son of God, and that in some respect differing from his human nature. The Scripture gives him both names, calling him at one time the Son of God, at another the Son of Man. As to the latter, there can be no question that he is called a Son in accordance with the phraseology of the Hebrew language, because he is of the offspring of Adam. On the other hand, I maintain that he is called a Son on account of his Godhead and eternal essence, because it is no less congruous to refer to his divine nature his being called the Son of God, than to refer to his human nature his being called the Son of Man. In fine, in the passage which I have quoted, Paul does not mean, that he who according to the flesh was begotten of the seed of David, was declared to be the Son of God in any other sense than he elsewhere teaches that Christ, who descended of the Jews according to the flesh, is “over all, God blessed for ever,” ( Rom. 9:5 ). But if in both passages the distinction of two natures is pointed out, how can it be denied, that he who according to the flesh is the Son of Man, is also in respect of his divine nature the Son of God?

They indeed find a blustering defence of their heresy in its being said, that “God spared not his own Son,” and in the communication of the angel, that He who was to be born of the Virgin should be called the “Son of the Highest,” ( Rom. 8:32 ; Luke 1:32 ). But before pluming themselves on this futile objection, let them for a little consider with us what weight there is in their argument. If it is legitimately concluded, that at conception he began to be the Son of God, because he who has been conceived is called a Son, it will follow, that he began to be the Word after his manifestation in the flesh, because John declares, that the Word of life of which he spoke was that which “our hands have handled,” ( 1 John 1:1 ). In like manner we read in the prophet, “Thou, Bethlehem Ephratah, though thou be little among the thousands of Israel, yet out of thee shall he come forth that is to be a ruler in Israel; whose goings forth have been from of old, from everlasting,” ( Mic. 5:2 ). How will they be forced to interpret if they will follow such a method of arguing? I have declared that we by no means assent to Nestorius, who imagined a twofold Christ, when we maintain that Christ, by means of brotherly union, made us sons of God with himself, because in the flesh, which he took from us, he is the only-begotten Son of God. And Augustine wisely reminds us, See August. De Corruptione et Gratia. cap. 11, et De Civitate Dei, lib. 10 cap 29, et alibi See also cap. 17 s. 1.

See Irenæus, lib. 4 cap 14 et 37; Tertullian adversus Praxeam. The above passages from The Proverbs is quoted by Augustine, Ep 49 , Quæs. 5.

But although Servetus heaped together a number of horrid dogmas, to which, perhaps, others would not subscribe, you will find, that all who refuse to acknowledge the Son of God except in the flesh, are obliged, when urged more closely, to admit that he was a Son, for no other reason than because he was conceived in the womb of the Virgin by the Holy Spirit; just like the absurdity of the ancient Manichees, that the soul of man was derived by transfusion from God, from its being said, that he breathed into Adam’s nostrils the breath of life ( Gen. 2:7 ). For they lay such stress on the name of Son that they leave no distinction between the natures, but babblingly maintain that the man Christ is the Son of God, because, according to his human nature, he was begotten of God. Thus, the eternal generation of Wisdom, celebrated by Solomon ( Prov. 8:22 , seq). is destroyed, and no kind of Godhead exists in the Mediator: or a phantom is substituted instead of a man. The grosser delusions of Servetus, by which he imposed upon himself and some others, it were useful to refute, that pious readers might be warned by the example, to confine themselves within the bounds of soberness and modesty: however, I deem it superfluous here, as I have already done it in a special treatise. Vide Calv. Defensio Orthodoxæ Fidei Sacræ Trinitatis adversus Prodigiosos Errores Michaelis Serveti Hispani.