Ephesians is a letter from Paul, written to the believers in the city of Ephesus.
He is writing this in prison or while under house arrest, due to persecution of Christians at that time. He begins Ephesians by referring to the spiritual blessings Christ brings into our lives. He also mentions God's plan of salvation through Jesus for us. Paul encourages the Ephesians and states that he's thankful for their faith in Christ. Paul, in 3:16-19 tries to explain the vastness of Christ's power in the human being, "I pray that out of his glorious riches he may strengthen you with power through his Spirit in your inner being, so that Christ may dwell in your hearts through faith. An I pray that you, being rooted and established in love, may have power, together with all the saints, to grasp how wide and long and high and deep is the love of Christ, and to know this love that surpasses knowledge-that you may be filled to the measure of all the fullness of God." Paul advises that Christians do not engage in, 4:29-31 "...unwholesome talk...bitterness, rage and anger, brawling and slander with every form of malice."
In 5:5 he further tells Ephesians "For this you can be sure: No immoral, impure or greedy person - such a man is an idolator - has an inheritance in the kingdom of Christ and God." Paul ends with words to encourage mutual respect between husband and wife, child and parent, slave and master. 6:13 offer comfort and courage to those in need, "Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything to stand. Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness in place and with your feet fitted with the readiness that comes from the gospel of peace. In addition to this, take up the shield of faith, with which you can extinguish al the flaming arrows of the evil one. Take the helmet of salvation and the sword of the Spirit, which is the word of God."