John Calvin Commentary Ephesians 4:1

"I therefore, the prisoner in the Lord, beseech you to walk worthily of the calling wherewith ye were called," — Ephesians 4:1 (ASV)

The three remaining chapters consist entirely of practical exhortations. Mutual agreement is the first subject, during which a discussion is introduced concerning the government of the church, as it was established by our Lord to maintain unity among Christians.

I therefore, the prisoner of the Lord. His imprisonment, which might have been thought more likely to cause him to be despised, is appealed to, as we have already seen, as a confirmation of his authority. It was the seal of that embassy with which he had been honored. Whatever belongs to Christ, though in the eyes of men it may be attended by disgrace, ought to be viewed by us with the highest regard. The apostle’s prison is more truly venerable than the splendid retinue or triumphal chariot of kings.

That you may walk worthy. This is a general sentiment, a sort of preface, on which all the following statements are founded. He had formerly illustrated the calling with which they were called, and now reminds them that they must live in obedience to God, so that they may not be unworthy of such distinguished grace.