But Cyprian did not just hold his view on rebaptism as an personal opinion (material heretic), he also called a council to decree rebaptism of heretics, even after Pope Stephen condemned the practice (source:
newadvent.org/fathers/0508.htm). Wouldn’t that meet the criteria of a formal heretic?
You are correct and I wrong, St. Cyprian did not seem to change his views on rebaptism. Here are some interesting quotes on the situation from the Early Church, taken from:
biblicalcatholic.com/apologetics/num44.htm
St. Jerome on St. Cyprian
St. Jerome (c. Lucif 23) tells us:
Code:
"Blessed Cyprian attempted to avoid heresy, and therefore rejected the baptism conferred by heretics, sent [the acts of] an African Council on this matter to Stephen, who was then Bishop of the city of Rome, and twenty-second from St. Peter; but his attempt was in vain.** Eventually those very Bishops, who had decreed with him that heretics were to be rebaptized, returned to the ancient custom, and published a new decree."**
This event is not otherwise testified. In fact, we do not know what happened after St. Cyprian’s last letter to Pope Stephen. We cannot guess what was St. Jerome’s authority. It is fairly clear that
St. Cyprian was not cut off from communion with Rome under Dionysius and Xystus. It is inconceivable that Stephen withdrew his decision; it is almost as unlikely that Dionysius or Xystus dropped it. On the other hand, St. Cyprian’s extreme anger, shown in his letter to Pompeius, is likely to have passed, as anger does. He had previously admitted the ancient custom, for bishops who preferred it. It is not very probable that his hundred bishops should have continued to support him against Rome. Did he make some explanations or concessions? The Donatists knew no more than St. Augustine knew. St. Optatus assumes that peace was never broken. Indeed, had Cyprian and all Africa been cut off from Rome by a minor excommunication (as we might gather from Firmilian’s letter) the event would have been tremendous in import and notoriety. St. Augustine must be right that peace was somehow patched up without any weakening on the part of Rome
St. Augustine on St. Cyprian
St. Augustine was at one time doubtful whether St. Cyprian’s letters on this matter were genuine – C. Cresc I 32 (38), II 31 (39), though he preferred simply to say that they are not canonical Scripture, and that he does not follow them (ibid). But elsewhere he admits that the style is Cyprian’s – Epistle 93, 10 (35), remarking that,
though we do not know whether he changed his mind, “it is not incongruous to suppose that so great a man did correct his view”; at any rate, si quid in eo fuerat emendandum, purgauit Pater falce passionis (compare De bapt I, xviii:28, in catholica unitate permansit, et charitatis ubertate compensatum est, et passionis falce purgatum).
The question whether Cyprian was likely to give in depends on the other question, which view did he hold more strongly: the one, that nothing can justify the breaking of unity; the other, that it was permissible for some bishops to teach that heretics could only baptize into the devil, whereas others might justly hold their baptism to be valid, according to a mistaken tradition.
It is natural that Anglicans should assume that Cyprian must have adhered loyally and generously to the comprehensiveness which includes contradictory theories and acts, whereas he would willingly give up (for the sake of the view that black is white) his former declarations that it is necessary to be inside the Church. St. Augustine judges contrariwise that the martyr was not at heart a latitudinarian, but was above all a lover of unity. Perhaps the fourth and fifth centuries were nearer in sympathy to Cyprian than were the 17th or the 19th.
“What he poured forth against Stephen in his irritation I will not discuss over again,” says St. Augustine (De bapt V, xxv:36). He believes that “uicit tamen pax Christi in cordibus eorum.” But only Donatists could think Cyprian was in the right, and not the Pope. Puller takes the Donatist side, and parodies St. Augustine’s words about Cyprian. He doubts whether Stephen was a martyr (and the fact is doubtful), adding:
Code:
"If he [Stephen] did so die, we may hope that he purged away in that second baptism whatever was amiss in his life." (Puller, Primitive Saints, 3rd edition, page 70)
"He [Cyprian] merited to attain the crown of martyrdom; so that any cloud which had obscured the brightness of his mind was driven away by the brilliant sunshine of his glorious blood." (St. Augustine, De bapt I, xviii:28)
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