Truth is we can do all things through Christ who strengthens us. The devil would tell us to hold a grudge. Truth is, we are better off letting it go. I intentionally repeat this question over and over so that by the end of the lesson most students can name the six pieces of armor. People will never behave righteously until they see themselves as righteous.
People never live above the level of their self-concept.
This is why I love self publishing on the Internet. I have yet to meet an editor who would let me use such terms. You might point out that it is in our best interest to put on the full armor of God. This is not something that is good for God and bad for us. As with all areas, it does us good to live God's plan for our lives.