O Timothy, keep that which is committed to your trust, avoiding profane and vain utterances, and oppositions of what is falsely called knowledge:
All Commentaries on 1 Timothy 6:20 Go To 1 Timothy 6
Eusebius of Caesarea
AD 339
Besides this, the same man [Hegesippus], when relating the events of these times, adds that until then the church had remained a pure and undefiled virgin, since those who attempted to corrupt the sound rule of the Savior’s preaching, if any did exist, until then lurked somewhere in obscure darkness. But when the sacred band of the apostles had received an end of life in various ways, and the generation of those who were deemed worthy to hear the divine wisdom with their own ears had passed away, then the league of godless error took its beginnings because of the deceit of heretical teachers who, since none of the apostles still remained, attempted henceforth barefacedly to proclaim in opposition to the preaching of truth “the knowledge falsely socalled.”