Romans 12-13

The last warning Paul states in chapter 12 is in regard to our interaction with evil. Even as believers we will interact with evil every day of our lives. Selfish people will come after us with evil intent. Immature Christians will react in circumstances and display the evil actions of their old self. Evil will come at us from those around us but Paul wants us to consider how we respond to the affront of evil in our lives. God is seeking to develop in us the reflex of good. He wants our first response in every situation to be love motivated. Any other reaction sets us up for defeat at the hands of evil.
Stuart