The Whole Armor of God - RIGHTEOUSNESS
"Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;" (Eph. 6:14)
The only righteousness we posses is that which is imputed unto us through the Lord Jesus Christ (see Romans 4:22-24 and 1 Cor. 1:30). Every born again believer has been made righteous by God's grace (see also 1 John 2:29). We can and should therefore demonstrate or reflect this truth in our every day lives. Righteousness ought to be in the forefront of our hearts, minds, and demonstrated in our actions, words, motives, etc. Since God has given us this virtue as part of the whole armor we are responsible primarily to God in making sure that we demonstrate this excellent virtue. How many Christians damage their testimony (and effectiveness for service) because they are not careful to maintain righteousness in actions and or words. It is as if they have let their guard down and so Satan does great damage to others, as well as to the Christian himself. Doing what is right sometimes may not be easy but it is a sure way of victory in the spiritual battle.