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.
Titus 3:10 instructs whenever a divisive person approaches ME and tries to start an argument, I am to warn them twice about their behavior and then excuse myself. Thereafter I should ignore them, until they repent of their argumentativeness. It is a simple instruction by which I can avoid being influenced by divisiveness. It is not an instruction to the Church or the State to burn heretics.