152. Augustine answered: Wherefore say you this? Can it be that we reproach all nations with the dark and hidden things which are declared by men, and do not choose to understand the manifest sayings which God spake in olden time of all the nations of the earth? This is indeed great blindness of heart; and if you do not recognise it in yourselves, that is even greater blindness.
153. Petilianus said: "'Blessed are the peacemakers: for they shall be called the children of God.'[874] You make a pretence of peace by your wickedness, and seek unity by war."
154. Augustine answered: We do not make a pretence of peace by wickedness, but we preach peace out of the gospel; and if you were at peace with it, you would be at peace also with us. The risen Lord, when presenting Himself to the disciples, not only that they should gaze on Him with their eyes, but also that they should handle Him with their hands, began His discourse to them with the words, "Peace be unto you." And how this peace itself was to be maintained, He disclosed to them in the words which followed. For "then opened He their understanding, that they might understand the Scriptures, and said unto them, Thus is it written, and thus it behoved Christ to suffer, and to rise from the dead the third day; and that repentance and remission of sins should be preached in His name among all nations, beginning at Jerusalem."[875] If you will keep peace with these words, you will not be at variance with us. For if we seek unity by war, our war could not be praised in more glorious terms, seeing that it is written, "Thou shalt love thy neighbour as thyself."[876] And again it is written, "No man ever yet hated his own flesh."[877] And yet the flesh lusteth against the spirit, and the spirit against the flesh.[878] But if no man ever yet hated his own flesh, and yet a man lusteth against his own flesh, here you have unity sought by war, that the body, being subject to correction, may be brought under submission. But what the spirit does against the flesh, waging war with it, not in hatred, but in love, this those who are spiritual do against those who are carnal, that they may do towards them what they do towards themselves, because they love their neighbours as neighbours indeed. But the war which the spiritual wage is that correction which is in love: their sword is the word of God. To such a war they are aroused by the trumpet of the apostle sounding with a mighty force: "Preach the word; be instant in season, out of season; reprove, rebuke, exhort, with all long-suffering and doctrine."[879] See then that we act not with the sword, but with the word. But you answer what is not true, while you accuse us falsely. You do not correct your own faults, and you bring against us those of other men. Christ bears true witness concerning the nations of the earth; you, in opposition to Christ, bear false witness against the nations of the earth. If we were to believe you rather than Christ, you would call us peacemakers; because we believe Christ rather than you, we are said to make a pretence of peace by our wickedness. And while you say and do such things as this, you have the further impudence to quote the words, "Blessed are the peacemakers: for they shall be called the children of God."
Chap. lxix.—155. Petilianus said: "Though the Apostle Paul says, 'I therefore, the prisoner of the Lord, beseech you, brethren, that ye walk worthy of the vocation wherewith ye are called, with all lowliness and meekness, forbearing one another in love; endeavouring to keep the unity of the Spirit in the bond of peace.'"[880]
156. Augustine answered: If you would not only say these words, but hearken to them as well, you would put up even with known evils for the sake of peace, instead of inventing new ones for the sake of quarrelling, if it were only because you subsequently learned, for the sake of the peace of Donatus, to put up with the most flagrant and notorious wickedness of Optatus. What madness is this that you display? Those who are known are borne with, that a fragment may not be further split up; those of whom nothing is known are defamed, that they themselves may not remain in the undivided whole.
Chap. lxx.—157. Petilianus said: "To you the prophet says, 'Peace, peace; and where is there peace?'"[881]
158. Augustine answered: It is you that say this to us, not the prophet. We therefore answer you: If you ask where peace is to be found, open your eyes, and see of whom it is said, "He maketh wars to cease in all the world."[882] If you ask where peace is to be found, open your eyes to see that city which cannot be hidden, because it is built upon a hill; open your eyes to see the mountain itself, and let Daniel show it to you, growing out of a small stone, and filling the whole earth.[883] But when the prophet says to you, "Peace, peace; and where is there peace?" what will you show? Will you show the party of Donatus, unknown to the countless nations to whom Christ is known? It is surely not the city which cannot be hid; and whence is this, except that it is not founded on the mountain? "For He is our peace, who hath made both one,"[884]—not Donatus, who has made one into two.