While Ephesians 1-3 is concerned with all the believer has been given through salvation in Christ, chapters 4-6 are concerned with how the believer should walk responsibly in the newness of life. In Ephesians 5:5-21, the emphasis is for the believer to walk as children of light who no longer adhere to the way of sin, but opposes and exposes sin and the darkness of life without Christ.