Never tire of doing what is right.

2 Thessalonians 3:6-18
Keep away from every brother who is idle and does not live according to the teaching you received from us.
If a man will not work, he shall not eat.  Don't lazy in work.
Paul worked night and day, laboring and toiling so that they would not be a burden to any of you They did this in order to make themselves a model for all to follow.
Some one is not busy; they are busybodies. - like gossip and criticize everything
Never tire of doing what is right.
If anyone does not obey our instruction in church, 1)take special note of him. 2)Do not associate with him, in order that he may fell ashamed. 3)Yet do not regards him as an enemy, but warn him as a brother.
Why?
Paul gave us the instruction to treat brothers do not obey instruction he wrote to them. 1) Let him knows, 2) keep away from him, 3)but don't regards him as enemy, but warn him as a brother, with love.
Idle is not only to the physical idle, but also focus on fashion, modern matter, position or money.
Don't talk too much but do the right thing, live out the life of Christ to be a good witness among people. To be a model to attract people come to Jesus.
Paul stressed the need to work in his first letter. But excitement about Christ's coming seems to have made the situation worse, not better. So Paul speaks out in strong terms against those who idle their life way and sponge on others. They can find no warrant for this in the example he has set.
How?
Never tire of doing what is right, don't be frustrated by other idle or lazy brothers,  follow the model of Paul and walk on the way of God.