Years ago a friend and I were having a dialogue in which I was the student and she was very much the instructor. She was drilling me on the battle gear of a Christian, on the basic armor spoken of in the Bible.
I've long since forgotten the exact words of our conversation, but their character was something like this: "Put on the armor and what have you got?" she asked. "Helmet of salvation?" Check. "Breastplate of righteousness?" Check. "Sword of the Spirit?" Check.
She marched me through the complete New Testament wardrobe and made sure I was properly suited up. "Now, child, are you completely protected?"