So, you people should stand firm [in the faith], with the belt of truth firmly buckled around you, and with the “flack jacket” of righteousness on your chest.
But, since we belong to the daytime [i.e., are enlightened], we should be sober. We should put on the “flack jacket” of faith and love, and for a helmet, the hope of being saved.
So, gather your thoughts together for action, take control of yourselves and focus your hope completely on God’s unearned favor, which will be brought to you by Jesus Christ when He returns.
by preaching the truth; through the power of God [i.e., possibly including miracles]; and by [using] weapons of righteousness in [our] right and left hands. [Note: This could allude to offensive and defensive weapons and means that Paul was fully equipped to do whatever was right].
And this is how the horses and their riders looked in the vision: They had on their chests fire [-red], [smoke-] blue and sulfur [-yellow] armor plate and the horses’ heads were like lions’ heads. And fire, smoke and sulfur proceeded out of their mouths.
The night is almost over and the day is near. So, we should stop doing the deeds of darkness [i.e., sinful things] and we should arm ourselves with the weapons of light [i.e., virtues for right living].
Therefore, put on the full armor of God, so that you can withstand [the devil, See verse 11] when the evil day comes. And, after you have done everything you can, still remain standing firm [in the faith].