24 If, moreover, we do not listen to the claims of the entire sect of Donatists when they pretend to be the Church of Christ, seeing that they do not allege in proof of this anything from the Divine Books, how much less, I ask, are we called upon to listen to the Rogatists, who will not attempt to interpret; in the interest of their party the words of Scripture: “Where You feed, where You rest in the south”! For if by this the southern part of Africa is to be understood—the district, namely, which is occupied by Donatists, because it is under a more burning portion of the heavens,— the Maximianists must excel all the rest of your party, as the flame of their schism broke forth in Byzantium and in Tripoli. Let the Arzuges, if they please, dispute this point with them, and contest that to them more properly this text applies; but how shall the imperial province of Mauritania, lying rather to the west than to the south, since it refuses to be called Africa,— how shall it, I say, find in the word “the south” a ground for boasting, I do not say against the world, but against even that sect of Donatus from which the sect of Rogatus, a very small fragment of that other and larger fragment, has been broken off? For what else is it than superlative impudence for one to interpret in his own favour any allegorical statements, unless he has also plain testimonies, by the light of which the obscure meaning of the former may be made manifest.
25. With how much greater force, moreover, may we say to you what we are accustomed to say to all the Donatists: If any can have good grounds (which indeed none can have) for separating themselves from the communion of the whole world, and calling their communion the Church of Christ, because of their having withdrawn warrantably from the communion of all nations—how do you know that in the Christian society, which is spread so far and wide, there may not have been some in a very remote place, from which the fame of their righteousness could not reach you, who had already, before the date of your separation, separated themselves for some just cause from the communion of the whole world? How could the Church in that case be found in your sect, rather than in those who were separated before you? Thus it comes to pass, that so long as you are ignorant of this, you cannot make with certainty any claim: which is necessarily the portion of all who, in defending the cause of their party, appeal to their own testimony instead of the testimony of God. For you cannot say, If this had happened, it could not have escaped our knowledge; for, not going beyond Africa itself, you cannot tell, when the question is put to you, how many subdivisions of the party of Donatus have occurred: in connection with which we must especially bear in mind that in your view the smaller the number of those who separate themselves, the greater is the justice of their cause, and this paucity of numbers makes them undoubtedly more likely to remain unnoticed. Hence, also, you are by no means sure that there may not be some righteous persons, few in number, and therefore unknown, dwelling in some place far remote from the south of Africa, who, long before the party of Donatus had withdrawn their righteousness from fellowship with the unrighteousness of all other men, had, in their remote northern region, separated themselves in the same way for some most satisfactory reason, and now are, by a claim superior to yours, the Church of God, as the spiritual Zion which preceded all your sects in the matter of warrantable secession, and who interpret in their favour the words of the Psalm, “Mount Zion, on the sides of the north, the city of the Great King,” with much more reason than the party of Donatus interpret in their favour the words, “Where You feed, where You rest in the south.”
26. You profess, nevertheless, to be afraid lest, when you are compelled by imperial edicts to consent to unity, the name of God be for a longer time blasphemed by the Jews and the heathen: as if the Jews were not aware how their own nation Israel, in the beginning of its history, wished to exterminate by war the two tribes and a half which had received possessions beyond Jordan, when they thought that these had separated themselves from the unity of their nation. As to the Pagans, they may indeed with greater reason reproach us for the laws which Christian emperors have enacted against idolaters; and yet many of these have thereby been, and are now daily, turned from idols to the living and true God. In fact, however, both Jews and Pagans, if they thought the Christians to be as insignificant in number as you are—who maintain, forsooth, that you alone are Christians—would not condescend to say anything against us, but would never cease to treat us with ridicule and contempt. Are you not afraid lest the Jews should say to you, “If your handful of men be the Church of Christ, what becomes of the statement of your Apostle Paul, that your Church is described in the words, 'Rejoice, you barren that bear not; breakforth and cry, you that travailest not: for the desolate has many more children than she which has an husband;' in which he plainly declares the multitude of Christians to surpass that of the Jewish Church?” Will you say to them, “We are the more righteous because our number is not large;” and do you expect them not to reply, “Whoever you claim to be, you are not those of whom it is said, 'She that was desolate has many children,' if you are reduced to so small a number”?
27. Perhaps you will quote against this the example of that righteous man, who along with his family was alone found worthy of deliverance when the flood came. Do you see then how far you still are from being righteous? Most assuredly we do not affirm you to be righteous on the ground of this instance until your associates be reduced to seven, yourself being the eighth person: provided always, however, that no other has, as I was saying, anticipated the party of Donatus in snatching up that righteousness, by having, in some far distant spot, withdrawn himself along with seven more, under pressure of some good reason, from communion with the whole world, and so saved himself from the flood by which it is overwhelmed. Seeing, therefore, that you do not know whether this may not have been done, and been as entirely unheard of by you as the name of Donatus is unheard of by many nations of Christians in remote countries,you are unable to say with certainty where the Church is to be found. For it must be in that place in which what you have now done may happen to have been at an earlier date done by others, if there could possibly be any just reason for your separating yourselves from the communion of the whole world.
Source: Letters (New Advent)