2 Thes. 3:13-18 (ESV)
As for you, brothers, do not grow weary in doing good.  If anyone does not obey what we say in this letter, take note of that person, and have nothing to do with him, that he may be ashamed.  Do not regard him as an enemy, but warn him as a brother.
 Now may the Lord of peace himself give you peace at all times in every way. The Lord be with you all.
 I, Paul, write this greeting with my own hand. This is the sign of genuineness in every letter of mine; it is the way I write.  The grace of our Lord Jesus Christ be with you all.
“Do not grow weary in doing good.” I love it. I don’t know if I have ever done enough good to be weary of doing it. I have though chafed at the law. For some reason people think the law is the way to get people to do good. The law though tends to incite sin “Romans 7:9 (ESV)
“ I was once alive apart from the law, but when the commandment came, sin came alive and I died.” So it is the law that needs to be killed with the Gospel that we might live apart from the law.
One does well to keep this in mind. But now that we live in the Gospel, lets not grow weary of doing good. We might even find joy and take pride in doing good, in the way pride in one’s work is a good thing. But to do good, your faith has to be in Christ, his death, his resurrection. Without faith in Christ’s propitiation for your sins, nothing you do is good in the eyes of God. But with the gospel faith comes alive, and doing good comes as a refreshment. It is when it is done under the law that it wears you down.
“If anyone does not obey what we say in this letter, take note of that person, and have nothing to do with him, that he may be ashamed. Do not regard him as an enemy, but warn him as a brother. “
Everytime. Everytime it is translated obey. And Everytime I see it I become more convinced it’s true meaning is listen. Literally it is “hyper” added to the word “to hear.” If they don’t listen to what we say in this letter, take note… have nothing to do. Of course this is why we have denominations. When we disagree as to what the Bible says we have no choice. We warn, and have nothing to do with those people. They aren’t our enemies, just misguided souls that need to be admonished. But really you can’t be a Baptist and stay in a Lutheran congregation in good conscience. Lutherans can’t do that in a Baptist congregation either. They aren’t enemies, but they deserve a good stern warning. We listen to what Paul writes.