John 8:28

Then when after working many signs, and teaching them, He drew them not to Himself, He next speaketh to them of the Cross, saying, "When ye have lifted up the Son of Man, then ye shall know that I am, and that I speak not of Myself, and that He that sent Me is with Me. And the Father hath not left Me alone." He showeth that He rightly said, "the same that I said unto you from the beginning." So little heed they gave to His words. "When ye have lifted up the Son of Man." "Do ye not expect that ye then shall certainly rid yourselves of Me, and slay Me? But I tell you that then ye shall most know that I Am, by reason of the miracles, the resurrection, and the destruction (of Jerusalem)." For all these things were sufficient to manifest His power. He said not, "Then ye shall know who I am"; for, "when ye shall see," He saith, "that I suffer nothing from death, then ye shall know that I Am, that is, the Christ, the Son of God, who govern all things, and am not opposed to Him." For which cause He addeth, "and of Myself I speak nothing." For ye shall know both My power and My unanimity with the Father. Because the, "of Myself I speak nothing," showeth that His Substance differeth not (from that of the Father), and that He uttereth nothing save that which is in the mind of the Father. "For when ye have been driven away from your place of worship, and it is not allowed you even to serve Him as hitherto, then ye shall know that He doth this to avenge Me, and because He is wroth with those who would not hear Me." As though He had said, "Had I been an enemy and a stranger to God, He would not have stirred up such wrath against you." This also Esaias declareth, "He shall give the wicked in return for His burial"; and David, "Then shall He speak unto them in His wrath"; and Christ Himself, "Behold, your house is left unto you desolate." And His parables declare the same thing when He saith, "What shall the Lord of that vineyard do to those husbandmen? He shall miserably destroy those wicked men." Seest thou that everywhere He speaketh thus, because He is not yet believed? But if He will destroy them, as He will, (for, "Bring hither," It saith, "those which would not that I should reign over them, and slay them,") wherefore saith He that the deed is not His, but His Father's? He addresseth Himself to their weakness, and at the same time honoreth Him that begat Him. Wherefore He said not, "I leave your house desolate," but, it "is left"; He hath put it impersonally. But by saying, "How often would I have gathered your children together-and ye would not," and then adding, "is left," He showeth that He wrought the desolation. "For since," He telleth them, "when ye were benefited and healed of your infirmities, ye would not know Me, ye shall know by being punished who I am."

This is the sign which before He had promised to give them when they asked it, saying, "An evil and adulterous generation seeketh after a sign, and there shall no sign be given to it, but the sign of the prophet Jonas;" meaning His cross, and His death, His burial, and His resurrection. And again, declaring in another way the virtue of the cross, He said, "When ye have lifted up the Son of Man, then shall ye know that I am He." And what He saith is to this purport: "When ye have crucified me, and think ye have overcome me, then, above all, shall ye know my might." For after the crucifixion, the city was destroyed, and the Jewish state came to an end, they fell away from their polity and their freedom, the gospel flourished, the word was spread abroad to the ends of the world; both sea and land, both the inhabited earth and the desert perpetually proclaim its power.

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? 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."

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 "is" 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.