Paul against heresies: You, however, must teach what is appropriate to sound doctrine. Titus 2:1
The apostle Paul was one of the great defenders of the Christian faith during the first century BC. The Book of Acts relates that with his baptism, the apostle Paul received the holy spirit and his gifts to carry out the mission that Christ had assigned him, to preach the Kingdom of God to the Gentiles. And it was after his arrival in Corinth and Athens during his second missionary journey that the apostle felt the need to write his famous epistles to combat the heresies that were beginning to show themselves as a serious problem. And the Epistle addressed to his disciple Titus is a clear example of how the faith was being besieged by the teaching of error.
The apostle Paul probably visited the island of Crete during his journey to Rome to be tried by the emperor, and in the letter to Titus, it is described how the apostle left his beloved disciple with the task of organizing and leading the apostolic church on the island.
In this letter, the apostle addressed Titus with harsh words about the danger of heresies, the problem was not minor, and the risk was a schism within the Christian community itself. That is why the apostle described in his epistle the main task of the presbyters of the community: "He must hold firmly to the trustworthy message as it has been taught, so that he can encourage others by sound doctrine and refute those who oppose it" Titus 1:9.
Then Paul continued his teaching and explained how the flesh and the spirit are opposed to each other, just as there are devout men who follow the dictates of the spirit, there are also rebellious ones who only follow their passions and fleeting desires. In Paul's thinking, Titus, as a presbyter and bishop, had to keep this problem in mind and choose leaders for their integrity. This is why the apostle Paul insisted on the subject of formation in the true faith, to correct those who by ignorance took the wrong path, sinning excessively, and so Paul wrote to Titus: "You, however, must teach what is appropriate to sound doctrine" Titus 2:1. With this, Paul made it clear in his Epistle to Titus that faithfulness to Christ was ultimately faithfulness to faith and truth, avoiding the teaching of error.

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