Ch. 5. And this unity we ought to hold firmly and assert, especially we bishops who preside in the Church, that we may prove the episcopate itself to be one and undivided. Let no one deceive the brotherhood by a falsehood; let no one corrupt the truth by a perfidious prevarication. The episcopate is one, each part of which is held by each one in its entirety. The Church, also, is one which is spread abroad far and wide into a multitude by an increase of fruitfulness. As there are many rays of the sun, but one light, and many branches of a tree, but one strength based upon its tenacious root, and since from one spring flow many streams, although the multiplicity seems diffused in the liberality of an overflowing abundance, yet the unity is still preserved in its source. (_b_) Firmilian of Cæesarea, _Ep. ad Cyprianum_, in Cyprian, _Ep. 74_ [=75]. (MSL, 3:1024.) The matter in dispute was the rebaptism of those heretics who had received baptism before they conformed to the Church. See § 52. It was the burning question after the rise of the Novatian sect. Stephen, bishop of Rome (254-257), had excommunicated a number of churches and bishops, among them probably Cyprian himself. See the epistle of Dionysius to Sixtus of Rome, the successor of Stephen, in Eusebius, _Hist. Ec._, VII, 5. “He” (Stephen) therefore had written previously concerning Helenus and Firmilianus and all those in Cilicia, Cappadocia, Galatia, and the neighboring countries, saying that he would not communicate with them for this same cause: namely, that they rebaptized heretics. This attitude of Stephen roused no little resentment in the East, as is shown by the indignant tone of Firmilian, who recognizes no authority in Rome. The text may be found in Mirbt, n. 74, and in part in Kirch, n. 274. The epistle of Firmilian is to be found among the epistles of Cyprian, to whom it was written. Ch. 2. We may in this matter give thanks to Stephen that it has now happened through his unkindness [inhumanity] that we receive proof of your faith and wisdom. Ch. 3. But let these things which were done by Stephen be passed by for the present, lest, while we remember his audacity and pride, we bring a more lasting sadness on ourselves from the things he has wickedly done.