1 Corinthians 12:12For as the body is one and has many members, but all the members of that one body, being many, are one body, so also is Christ.
One important feature of a body, for example the human body, is communication and coordination. Any organ or member of the body that does not communicate or coordinate is in a state of gangrene.
Likewise, two most important diagnostics of an organ or a member of body of Christ is communicate and coordinate with other organs of the body.