Shared ground
Paul draws a clear line between people “outside” the church and those “within.” His instruction is not about trying to control the moral life of the wider city. It is about how the community relates to a person who “is named a brother” yet is living in ways that damage the community.
The boundary he describes is concrete: “don’t even eat with such a person.” In Corinth, meals signaled acceptance and belonging, so Paul is talking about a real withdrawal of fellowship, not merely a private attitude.
He also frames the issue in terms of responsibility: the church evaluates its own; God will judge those outside.
Where interpretation differs
Some disagreement centers on how to read Paul’s language of “judging” (judge). One view says Paul means a formal, communal process that can lead to removal from membership (supported by the closing directive to “put away” the wicked person). Another view says Paul is mainly talking about community discernment that leads to changed relational boundaries, whether or not a formal procedure is in view.
Another difference is how to take “don’t even eat.” Some understand it as focused on the church’s shared meal (public fellowship that expresses unity). Others think it includes private meals too, because any shared table in that setting communicated social acceptance.
A further difference is what qualifies someone as “named a brother.” Some read it as a self-claim (“calls himself a brother”), while others read it as recognized belonging (“regarded by the church as a brother”).
Why the disagreement exists
Paul uses short, forceful phrases without spelling out process details: “judge,” “within/outside,” “don’t even eat,” and the quotation “put away” can each be read narrowly (church meeting / formal action) or broadly (all fellowship / clear social separation). Also, the behavior list raises the question of whether he means an ongoing settled pattern or any serious instance; the text itself emphasizes someone characterized by these behaviors, but it does not define the threshold.
What this passage clearly contributes
Explicitly, Paul limits the church’s disciplinary concern to insiders (“within”), not outsiders, and he ties discipline to the integrity of shared fellowship. He treats withdrawal from table fellowship as a meaningful marker of boundaries, and he ends with a decisive community action: remove the “wicked” person from among the group. The passage also places final judgment of outsiders in God’s hands, while assigning the church responsibility to evaluate those who belong to it (1 Corinthians 5:11–1 Corinthians 5:13).