Let the entire mass of heresies choose, therefore, for themselves the times when they should appear, provided that the when be an unimportant point; allowing, too, that they be not of the truth, and (as a matter of course) that such as had no existence in the time of the apostles could not possibly have had any connection with the apostles. If indeed they had then existed, their names would be extant, with a view to their own repression likewise. Those (heresies) indeed which did exist in the days of the apostles, are condemned in their very mention. If it be true, then, that those heresies, which in the apostolic times were in a rude form, are now found to be the same, only in a much more polished shape, they derive their condemnation from this very circumstance. Or if they were not the same, but arose afterwards in a different form, and merely assumed from them certain tenets, then, by sharing with them an agreement in their teaching, they must needs partake in their condemnation, by reason of the above-mentioned definition, of lateness of date, which meets us on the very threshold. Even if they were free from any participation in condemned doctrine, they would stand already judged on the mere ground of time, being all the more spurious because they were not even named by the apostles. Whence we have the firmer assurance, that these were (the heresies) which even then, were announced as about to arise.
Tertullian
Against Marcion
The Prescription Against Heretics
Chapter XXXIV