Lloyd-Jones: what is schism?

Martin Lloyd-Jones answers the question: what is a schism?

The best definition you will ever find of schism is in Paul's First Epistle to the Corinthians, especially in chapter 12 perhaps but it is also there in other places. Schism as it is defined by the great apostle is this: it is men and women who are agreed about the centralities of the faith disagreeing about things which are not essential; it is a tearing of the body. The only man who can be guilty of schism, therefore, is a man who believes the truth, the essential truth, but denies other things that are not essential.

[What is an Evangelical?]

The observation that came to me here is that Biblical unity does not just consist of attending a meeting together. Presumably the church in Corinth was still meeting together, and yet it is the only church which is explicitly criticised for being schismatic.