Like most of Paul's epistles, this consists of two parts, a doctrinal and a practical.
(1.) The doctrinal part comprises the first two chapters. His main theme is developed in chapter 2. He warns them against being drawn away from Him in whom dwelt all the fulness of the Godhead, and who was the head of all spiritual powers. Christ was the head of the body of which they were members; and if they were truly united to him, what needed they more?
(2.) The practical part of the epistle (3-4) enforces various duties naturally flowing from the doctrines expounded. They are exhorted to mind things that are above (3:1-4), to mortify every evil principle of their nature, and to put on the new man (3:5-14). Many special duties of the Christian life are also insisted upon as the fitting evidence of the Christian character. Tychicus was the bearer of the letter, as he was also of that to the Ephesians and to Philemon, and he would tell them of the state of the apostle (4:7-9). After friendly greetings (10-14), he bids them interchange this letter with that he had sent to the neighbouring church of Laodicea. He then closes this brief but striking epistle with his usual autograph salutation. There is a remarkable resemblance between this epistle and that to the Ephesians (q.v.). The genuineness of this epistle has not been called in question.