Anti-heretical alterations exist in rare cases, but early, diverse witnesses expose secondary readings and preserve the original with high certainty.
Orthodox Scribes Altered the Text to Combat Heresies: Bart D. Ehrman
The Transmission of the Text Was Wildly Uncontrolled
Decentralized copying produced variants, but public use, correction, shared conventions, and multiple streams constrained drift and preserved a recoverable text.
