Note 12 — THE DOGMATIC IMPORT OF THE LIFE OF JESUS.

This doctrinal system of the ancient church concerning the person and work of Christ, passed also into the confessions of the Lutheran churches, and was still more elaborately developed by their theologians.12 With regard to the person of Christ, they adhered to the union of the divine and human natures in one person: according to them, in the act of this union, unitio personalis, which was simultaneous with the conception, it was the divine nature of the Son of God which adopted the human into the unity of its personality; the state of union, the unio personalis, was neither essential, nor yet merely accidental, neither mystical nor moral, still less merely verbal, but a real and supernatural union, and eternal in its duration. From this union with the divine nature, there result to the human nature in Christ certain pre-eminent advantages: namely, what at first appears a deficiency, that of being in itself impersonal, and of having personality only by its union with the divine nature; further, impeccability, and the possibility of not dying. Besides these special advantages, the human nature of Christ obtains others also from its union with the divine. The relation of the two natures is not a dead, external one, but a reciprocal penetration, a περιχώρησις; an union not like that of two boards glued together, but like that of fire and metal in glowing iron, or of the body and soul in man. This communion of natures, communio naturarum, is manifested by a communication of properties, communicatio idiomatum, in virtue of which the human nature participates in the advantages of the divine, and the divine in the redeeming work of the human. This relation is expressed in the propositions concerning the person, propositionibus personalibus, and those concerning the properties, idiomaticis; the former are propositions in which the concrete of the one nature, i.e. the one nature as conceived in the person of Christ, is predicated of the other, as in 1 Cor. xv. 47: the second man is the Lord from heaven; the latter are propositions in which determinations of one or the other nature, are referred to the entire person (genus idiomaticum), or in which acts of the entire person are referred to one or the other nature (genus apotelesmaticum), or lastly, in which attributes of the one nature are transferred to the other, which however is only possible from the divine to the human, not from the human to the divine (genus auchematicum).