I urge you, brothers and sisters, to keep an eye on those who cause dissensions and offenses, in opposition to the teaching that you have learned; avoid them.
not to be quickly shaken in mind or alarmed, either by spirit or by word or by letter, as though from us, to the effect that the day of the Lord is already here.
Now we command you, beloved, in the name of our Lord Jesus Christ, to keep away from believers who are living in idleness and not according to the tradition that they received from us.
He must have a firm grasp of the word that is trustworthy in accordance with the teaching, so that he may be able both to preach with sound doctrine and to refute those who contradict it.
Beloved, while eagerly preparing to write to you about the salvation we share, I find it necessary to write and appeal to you to contend for the faith that was once for all entrusted to the saints.