Tertullian, Prescription against Heretics 28
Come now — suppose they all erred. Suppose the Apostle was deceived in his testimony to certain people. Suppose the Holy Spirit never glanced back to guide the Church into truth, despite being sent by Christ for that very purpose, requested from the Father for that very purpose, to be the teacher of truth. Suppose the steward of God, the vicar of Christ, neglected his duty, letting the churches meanwhile understand and believe something other than what he himself preached through the apostles. Is it plausible that so many and such great churches would have erred their way into a single faith? Among many events there is not a single outcome: the error of the churches' doctrine should have varied. Yet what is found to be one across many is not error — it is tradition. So let someone dare to claim that those who handed it down were mistaken.
Latin
Age nunc, omnes erraverint; deceptus sit Apostolus de testimonio reddendo quibusdam; nullam respexerit Spiritus Sanctus, uti eam in veritatem deduceret, ad hoc missus a Christo, ad hoc postulatus de Patre, ut esset doctor veritatis; neglexerit officium Dei villicus, Christi vicarius, sinens Ecclesias aliter interim intelligere, aliter credere, quam ipse per Apostolos praedicabat: ecquid verisimile est, ut tot ac tantae in unam fidem erraverint? Nullus inter multos eventus unus est exitus: variasse debuerat error doctrinae Ecclesiarum. Caeterum, quod apud multos unum invenitur, non est erratum, sed traditum. Audeat ergo aliquis dicere illos errasse qui tradiderunt?