Chapter 1
Having, in the three preceding books, fully stated what occurred to us by way of answer to the treatise of Celsus, we now, reverend Ambrosius, with prayer to God through Christ, offer this fourth book as a reply to what follows. And we pray that words may be given us, as it is written in the book of Jeremiah that the Lord said to the prophet: Behold, I have put My words in your mouth as fire. See, I have set you this day over the nations, and over the kingdoms, to root out and to pull down, and to destroy, and to throw down, and to build and to plant. For we need words now which will root out of every wounded soul the reproaches uttered against the truth by this treatise of Celsus, or which proceed from opinions like his. And we need also thoughts which will pull down all edifices based on false opinions, and especially the edifice raised by Celsus in his work which resembles the building of those who said, Come, let us build us a city, and a tower whose top shall reach to heaven. Yea, we even require a wisdom which will throw down all high things that rise against the knowledge of God, and especially that height of arrogance which Celsus displays against us. And in the next place, as we must not stop with rooting out and pulling down the hindrances which have just been mentioned, but must, in room of what has been rooted out, plant the plants of God’s husbandry; and in place of what has been pulled down, rear up the building of God, and the temple of His glory — we must for that reason pray also to the Lord, who bestowed the gifts named in the book of Jeremiah, that He may grant even to us words adapted both for building up the (temple) of Christ, and for planting the spiritual law, and the prophetic words referring to the same. And above all is it necessary to show, as against the assertions of Celsus which follow those he has already made, that the prophecies regarding Christ are true predictions. For, arraying himself at the same time against both parties — against the Jews on the one hand, who deny that the advent of Christ has taken place, but who expect it as future, and against Christians on the other, who acknowledge that Jesus is the Christ spoken of in prophecy — he makes the following statement:—
Chapter 2
But that certain Christians and (all) Jews should maintain, the former that there has already descended, the latter that there will descend, upon the earth a certain God, or Son of a God, who will make the inhabitants of the earth righteous, is a most shameless assertion, and one the refutation of which does not need many words. Now here he appears to pronounce correctly regarding not certain of the Jews, but all of them, that they imagine that there is a certain (God) who will descend upon the earth; and with regard to Christians, that certain of them say that He has already come down. For he means those who prove from the Jewish Scriptures that the advent of Christ has already taken place, and he seems to know that there are certain heretical sects which deny that Christ Jesus was predicted by the prophets. In the preceding pages, however, we have already discussed, to the best of our ability, the question of Christ having been the subject of prophecy, and therefore, to avoid tautology, we do not repeat much that might be advanced upon this head. Observe, now, that if he had wished with a kind of apparent force to subvert faith in the prophetic writings, either with regard to the future or past advent of Christ, he ought to have set forth the prophecies themselves which we Christians and Jews quote in our discussions with each other. For in this way he would have appeared to turn aside those who are carried away by the plausible character of the prophetic statements, as he regards it, from assenting to their truth, and from believing, on account of these prophecies, that Jesus is the Christ; whereas now, being unable to answer the prophecies relating to Christ, or else not knowing at all what are the prophecies relating to Him, he brings forward no prophetic declaration, although there are countless numbers which refer to Christ; but he thinks that he prefers an accusation against the prophetic Scriptures, while he does not even state what he himself would call their plausible character! He is not, however, aware that it is not at all the Jews who say that Christ will descend as a God, or the Son of a God, as we have shown in the foregoing pages. And when he asserts that he is said by us to have already come, but by the Jews that his advent as Messiah is still future, he appears by the very charge to censure our statement as one that is most shameless, and which needs no lengthened refutation.