Fellowship
Intro
Here are some advice regarding fellowship.
The sin of wrong fellowship is the sin that gets people often in trouble with Satan. That is how Satan gets to people often.
Its therefore good to be careful with who you fellowship with. One good rule is to not give special treatment to people. In churches you are often told that you are to behave in a certain way. You are to meet people with love and respect.
Of course we shouldn't be nasty to people. But if you meet people on the street and talk to them or at work or at any other place you usually don't treat them with love and respect.
This demand that you are to meet people with love and respect opens up for bad people who are false to use the situation to harm you.
1cor5 brothers are people that are continuously into certain sins, fornicator, covetous, idolater, railer, drunkard, extortioner.
What I have found is that almost anyone could be pinned down as being in one of these sins. Like covetous for example. That makes you a hypocrite if you avoid these people because of their sins. Hypocrites have forgotten God.
If you don't open up in love and respect to people in fellowship this problem doesn't become so severe. So the fact that churches demand you to do so is a way to set a trap for you, to remove your common sense and armor so that Satan can do what he wants.
But the real danger with fellowship is the 2tim3 person. This person can probably be explained by the concept of the Satanbot.
If you avoid the 2tim3 person you will survive generally.
So rules for fellowship is avoid 2tim3 people.
The 1cor5 brothers are not as perillous as 2tim3. To discern the 2tim3 person can help you drastically.
Its also good to not fellowship with false brethren since they are also perillous.
One way to discern is to judge them by their fruit. Another way is to see where they fit into scripture. A third way is to discern directly spiritually. A fourth way is to pray about it. A fifth way is to listen to their testimony or what they say about Jesus.