“Let the peace of Christ rule in your hearts, since as members of one body you were called to peace. And be thankful.”
Colossians is a letter to a small Christian community about 100 miles from Ephesus. There are questions about authorship. It reflects the epistle for Ephesians. Were it written by Paul, it was probably written in the sixth decade, when Paul was imprisoned in Rome. This chapter begins with Paul eschewing carnality, saying we should embrace Christ. And, then Paul writes about the character of the new person.
We are called to be part of the body of Christ. That is a unity statement, not a call for division.