Ephesians 6:12-13

For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.

For our struggle is not against flesh and blood
1 Corinthians 15:50 I declare to you, brothers, that flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable.
Hebrews 2:14 Since the children have flesh and blood, he too shared in their humanity so that by his death he might destroy him who holds the power of death--that is, the devil-- ...

but against the rulers, against the authorities,
Ephesians 1:21 ... far above all rule and authority, power and dominion, and every title that can be given, not only in the present age but also in the one to come.
Ephesians 3:10-11 His intent was that now, through the church, the manifold wisdom of God should be made known to the rulers and authorities in the heavenly realms, according to his eternal purpose which he accomplished in Christ Jesus our Lord.

against the powers
Romans 8:38-39 For I am convinced that neither death nor life, neither angels nor demons, neither the present nor the future, nor any powers, neither height nor depth, nor anything else in all creation, will be able to separate us from the love of God that is in Christ Jesus our Lord.

against the spiritual forces of evil in the heavenly realms
Ephesians 1:3 Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ.

Therefore put on the full armor of God
Ephesians 6:11 Put on the full armor of God so that you can take your stand against the devil's schemes.
2 Corinthians 6:7 ... in truthful speech and in the power of God; with weapons of righteousness in the right hand and in the left; ...

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.