Every heretic since even before Arius appeals directly to scriptures extensively. Your understanding of the Christian Religion is based on a foundation that you fail to acknowledge or possibly even know exists. Even the NT instructs Christians to listen to both the written and spoken teachings of the Apostles (and yes, the Apostles appointed new Apostles in Acts).

From 325 to about 1550 every Christian held to the Nicaean Creed. Have Christians been been wrong about the faith for most of the years since Christ?