If a person is in Christ (Ephesians 1), then there is unity between all kinds of people. But here is the deal. The devil wants to reconstruct the wall between people. The devil is at work to create consternation and division. Therefore, Paul writes Ephesians 6:10-20 to inform us of where the more significant battle is taking place. So, we need to pay attention and consider what God is saying about spiritual warfare.