Lectures or Tractates on the Gospel According to St. John: Tractate XL
Chapter 8. 28–32
1. Of the holy Gospel according to John, which you see in our hand, your Charity has already heard much, whereon by God’s grace we have discoursed according to our ability, pressing on your notice that this evangelist, specially, has chosen to speak of the Lord’s divinity, wherein He is equal with the Father and the only Son of God; and on that account he has been compared to the eagle, because no other bird is understood to take a loftier flight. Accordingly, to what follows in order, as the Lord enables us to treat of it, listen with all your attention.
2. We have spoken to you on the preceding passage, suggesting how the Father may be understood as True, and the Son as the Truth. But when the Lord Jesus said, “He that sent me is true,” the Jews understood not that He spake to them of the Father. And He said to them, as you have just heard in the reading, “When ye have lifted up the Son of man, then shall ye know that I am, and [that] I do nothing of myself; but as the Father hath taught me, I speak these things.” What means this? For it looks as if all He said was, that they would know who He was after His passion. Without doubt, therefore, He saw that some there, whom He Himself knew, whom with the rest of His saints He Himself in His foreknowledge had chosen before the foundation of the world, would believe after His passion. These are the very persons whom we are constantly commending, and with much entreaty setting forth for your imitation. For on the sending down of the Holy Spirit after the Lord’s passion, and resurrection, and ascension, when miracles were being done in the name of Him whom, as if dead, the persecuting Jews had despised, they were pricked in their hearts; and they who in their rage slew Him were changed and believed; and they who in their rage shed His blood, now in the spirit of faith drank it; to wit, those three thousand, and those five thousand Jews whom now He saw there, when He said, “When ye have lifted up the Son of man, then shall ye know that I am [He].” It was as if He had said, I let your recognition lie over till I have completed my passion: in your own order ye shall know who I am. Not that all who heard Him were only then to believe, that is, after the Lord’s passion; for a little after it is said, “As He spake these words, many believed on Him;” and the Son of man was not yet lifted up. But the lifting up He is speaking of is that of His passion, not of His glorification; of the cross, not of heaven; for He was exalted there also when He hung on the tree. But that exaltation was His humiliation; for then He became obedient even to the death of the cross. This required to be accomplished by the hands of those who should afterwards believe, and to whom He says, “When ye have lifted up the Son of man, then shall ye know that I am [He].”
And why so, but that no one might despair, however guilty his conscience, when he saw those forgiven their homicide who had slain the Christ?
3. The Lord then, recognizing such in that crowd, said, “When ye have lifted up the Son of man, then shall ye know that I am [He].” You know already what “I am” signifies; and we must not be continually repeating, lest so great a subject beget distaste. Recall that, “I am who am,” and “He who is hath sent me,” and you will recognize the meaning of the words, “Then shall ye know that I am.” But both the Father is, and the Holy Spirit is. To the same belongs the whole Trinity. But because the Lord spake as the Son, in order that, when He says, “Then shall ye know that I am,” there might be no chance of entrance for the error of the Sabellians, that is, of the Patripassians,—an error which I have charged you not to hold, but to beware of,—the error, I mean, of those who have said, The Father and Son are one and the same; two names, but one reality;—to guard them against that error, when the Lord said, “Then shall ye know that I am,” that He might not be understood as Himself the Father, He immediately added, “And I do nothing of myself; but as my Father taught me, I speak these things.” Already was the Sabellian beginning to rejoice over the discovery of a ground for his error; but immediately on showing himself as it were in the shade, he was confounded by the light of the following sentence. Thou thoughtest that He was the Father, because He said, “I am.” Hear now that He is the Son: “And I do nothing of myself.” What means this, “I do nothing of myself”? Of myself I am not. For the Son is God, of the Father; but the Father is God, yet not of the Son. The Son is God of God, and the Father is God, but not of God. The Son is light of light; and the Father is light, but not of light. The Son is, but there is [One] of whom He is; and the Father is, but there is none of whom He is.
4. Let not then, my brethren, His further words, “As my Father hath taught me, I speak these things,” be the occasion of any carnal thought stealing into your minds. For human weakness cannot think, but as it is accustomed to act and to hear. Do not then set before your eyes as it were two men, one the father, the other the son, and the father speaking to the son; as any one of you may do, when you say something to your son, admonishing and instructing him how to speak, to charge his memory with what you have told him, and, having done so, to express it in words, to enunciate distinctly, and convey to the ears of others what he has apprehended with his own. Think not thus, lest you be fabricating idols in your heart. The human shape, the outlines of human limbs, the form of human flesh, the outward senses, stature and motions of the body, the functions of the tongue, the distinctions of sounds,—think not of such as existing in that Trinity, save as they pertain to the servant-form, which the only-begotten Son assumed, when the Word was made flesh to dwell among us. Thereof I forbid thee not, human weakness, to think according to thy knowledge: nay, rather I require thee. If the faith that is in thee be true, think of Christ as such; but as such of the Virgin Mary, not of God the Father. He was an infant, He grew as a man, He walked as a man, He hungered, He thirsted as a man, He slept as a man; at last He suffered as a man, hung on the tree, was slain and buried as a man. In the same form He rose again; in the same, before the eyes of His disciples, He ascended into heaven; in the same will He yet come to judgment. For angel lips have declared in the Gospel, “He shall so come in like manner as ye have seen Him go into heaven.” When then you think of the servant-form in Christ, think of a human likeness, if you have faith; but when you think, “In the beginning was the Word, and the Word was with God, and the Word was God,” away with all human fashioning from your heart. Banish from your thoughts everything bounded by corporeal limits, included in local measurement, or spread out in a mass, how great soever its size. Perish utterly such a figment from your heart. Think, if you can, on the beauty of wisdom, picture to yourself the beauty of righteousness. Has that a shape? a size? a color?