But thanks be to God that, though you used to be the servants of sin, now you have been obedient from the heart to the very form of the doctrine into which you have been received.
Only let your behavior be worthy of the Gospel of Christ, so that, whether I return and see you, or whether, being absent, I hear about you, still you may stand firm with one spirit, with one mind, laboring together for the faith of the Gospel.
and by the things which you have heard from me through many witnesses. These things encourage faithful men, who shall then be suitable to teach others also.
Yet truly, you should remain in those things which you have learned and which have been entrusted to you. For you know from whom you have learned them.
For there shall be a time when they will not endure sound doctrine, but instead, according to their own desires, they will gather to themselves teachers, with itching ears,
embracing faithful speech which is in agreement with doctrine, so that he may be able to exhort in sound doctrine and to argue against those who contradict.
Most beloved, taking all care to write to you about your common salvation, I found it necessary to write to you in order to beg you to contend earnestly for the faith that was handed down once to the saints.
Therefore, keep in mind the way that you have received and heard, and then observe it and repent. But if you will not be vigilant, I will come to you like a thief, and you will not know at what hour I will come to you.