'Associate' in the Bible

I wrote to you in that letter that you were not to associate with fornicators;

But what I meant was that you were not to associate with any one bearing the name of "brother," if he was addicted to fornication or avarice or idol-worship or abusive language or hard-drinking or greed of gain. With such a man you ought not even to eat.

Do not refuse one another, unless perhaps it is just for a time and by mutual consent, so that you may devote yourselves to prayer and may then associate again; lest the Adversary begin to tempt you because of your deficiency in self-control.