We must live by faith and wait for the Spirit to resolve the darkness for us. We must remain receptive and positive, not expecting to understand God's ways, but simply trusting Him in them. This verse teaches that the only way we can stand in the battle against the enemy of our souls is by having on the whole armor of God. There's no way we can put on just a few pieces and be protected. In the Bible, God's Word and His Spirit together are spoken of as the truth and this is what we must have securely fastened about our loins.
Loins mean the energizing source that brings new life into being.
Throughout Scripture, God's Word and His Spirit are what quicken new life in us. God has given us His authority and His power to choose to put off the debris, dirt and filth in our own lives and to put on Christ. It's possible to possess God's supernatural authority and power in our lives and yet, never choose to use it. This Scripture tells us that only our constant faith choices will shield, cover and protect us from the attacks of the enemy. This shield was so effective and so strong in protecting the warrior, that the enemy's arrows were not able to penetrate it.