Ideas about the Kingdom of the Heavens around us and the unity of believers in Christ within it
The main purpose of Christian teaching is to give all those who follow the words and example of the teacher rescue out of the snare of the devil through repentance–a complete change of life direction–leading to a full knowledge of the truth–Jesus himself.
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.