Ideas about the Kingdom of the Heavens around us and the unity of believers in Christ within it
1 Timothy 6 also warns about people who create arguments in order to exploit them for financial gain and to build their own authority. This warning is presented in the context of teaching about respect for human authority and authority in the Church.
Heresy is properly defined as divisiveness, not merely believing a false doctrine. Heretics are divisive people. Those who state doctrines with which I disagree, but do so without insisting on division because of my belief, are not heretics. Thus calls for mutual understanding and patience.