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12 Fo we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.

13 Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm.

From Ephesians 6 Above is English Standard translation, here is Amplified, and at the bottom is The Message:

12 For we are not wrestling with flesh and blood [contending only with physical opponents], but against the despotisms, against the powers, against [the master spirits who are] the world rulers of this present darkness, against the spirit forces of wickedness in the heavenly (supernatural) sphere.

13 Therefore put on God's complete armor, that you may be able to resist and stand your ground on the evil day [of danger], and, having done all [the crisis demands], to stand [firmly in your place].

THE MESSAGE TRANSLATION (My favorite, it sounds like a Black Preacher shouting truth at you):
A Fight to the Finish

10-12 And that about wraps it up. God is strong, and he wants you strong. So take everything the Master has set out for you, well-made weapons of the best materials. And put them to use so you will be able to stand up to everything the Devil throws your way. This is no afternoon athletic contest that we'll walk away from and forget about in a couple of hours. This is for keeps, a life-or-death fight to the finish against the Devil and all his angels.

13-18 Be prepared. You're up against far more than you can handle on your own. Take all the help you can get, every weapon God has issued, so that when it's all over but the shouting you'll still be on your feet. Truth, righteousness, peace, faith, and salvation are more than words. Learn how to apply them. You'll need them throughout your life. God's Word is an indispensable weapon.