You people should do those things which you have learned and received and heard from me, and seen in me, and [then] the God [who gives] peace will be with you.
Remember your leaders who told you God’s message. [Note: This probably refers to former preachers who had since died]. Consider the outcome of the way they lived and imitate their faith.
Do not allow anyone to look down on you because you are [so] young, but you should be an example to those who believe [in Christ] in your speech, in your conduct, in your love, in your faith [and] in your purity.
And if any person does not obey our instructions, [given] in this letter, you should take note of him so that you do not associate with him, in hope that he will become ashamed [of his conduct].
And you became imitators of us and of the Lord. [And even though] you suffered much affliction, you welcomed the message with joy [given to you] by the Holy Spirit,
Now I urge you, brothers, watch out for those who are causing divisions and occasions for falling [away from God over matters] contrary to the teaching you have learned, and withdraw from them [i.e., stop listening to their false teaching].