Our Only Hope for Ephesians 4, 5, and 6

It has often been noted that perhaps more clearly than most epistles, Ephesians is divided into two parts - chapters 1-3 (the teaching), and chapter 4-6 (the commands). We sometimes refer to this as the indicative (1-3) and the imperative (4-6). There are many responsibilities placed upon the believer in chapters 4-6. How do we obey? What enables us to carry out God's commands with abundant joy? It's the doctrine presented in chapters 1-3. Our only hope for Ephesians 4-6 is found in what Paul tells us at the end of Ephesians 3.