>lb
Off topic, but I am going to disagree with your premise, that the 'full/whole armor of God' in Ephesians 6:11-18 has anything to do with "obedience." It's just not in there.
And your other premise is wrong as well. Actually, we DO get to choose, at all times, if we are going to obey or not obey. That's kinda the reason we need a Savior; we usually choose poorly.