Spiritual warfare is the most relevant force in our every day lives. What many people (including Christians) fail to realize is that the wars in the heavenly realms influence life in the natural world.
Validity of Spiritual Warfare
Since the 90% of this study will be an analysis of the Old Testament, it is natural that many Christians question the validity or necessity of dwelling this deep into the subject of warfare for the purpose of edification today. After all, we are under the New Covenant.
Old Testament history shows that war was part of God’s gift of the land to Israel. Now that the distinction is clear, the enemy is the same: Satan. It is true there is no need for Christians to engage in natural war, but there is every need for Christians to engage in spiritual warfare. In spiritual warfare, it is impossible not to take a side. We are either vessels of the Devil, actively fighting on his behalf, or vessels of God, “fighting the good fight”.
1 Timothy 6:12. Fight the good fight of faith, lay hold on eternal life, whereunto thou art also called, and hast professed a good profession before many witnesses.
When we accept Christ, we have declared war on the kingdom of darkness.
“There is something comforting by having Satan as an enemy. You would rather have him as an enemy than as a friend.” Charles Spurgeon
Top Scriptures on Spiritual Warfare
1 Corinthians 10:13: No temptation has overtaken you except what is common to mankind. And God is faithful; he will not let you be tempted beyond what you can bear. But when you are tempted, he will also provide a way out so that you can endure it.
John 8:32: And you will know the truth, and the truth will set you free.
Romans 12:21: Do not be overcome with evil, but overcome evil with good.
1 Timothy 6:12: Fight the good fight of the faith. Take hold of the eternal life to which you were called when you made your good confession in the presence of many witnesses.
Isaiah 40:31: But they who wait for the Lord shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint.
Deuteronomy 3:22: Do not fear them, for the Lord your God is the one fighting for you.
Romans 8:31: What then shall we say to these things? If God is for us, who is against us?
Joshua 1:9: Have I not commanded you? Be strong and courageous! Do not tremble or be dismayed, for the Lord your God is with you wherever you go.
Ephesians 6:11-18 AMP:  Put on God’s whole armor the armor of a heavy-armed soldier which God supplies, that you may be able successfully to stand up against all the strategies and the deceits of the devil.  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.  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.  Stand therefore hold your ground, having tightened the belt of truth around your loins and having put on the breastplate of integrity and of moral rectitude and right standing with God,  And having shod your feet in preparation to face the enemy with the firm-footed stability, the promptness, and the readiness produced by the good news of the Gospel of peace.  Lift up over all the covering shield of saving faith, upon which you can quench all the flaming missiles of the wicked one.  And take the helmet of salvation and the sword that the Spirit wields, which is the Word of God.  Pray at all times (on every occasion, in every season) in the Spirit, with all manner of prayer and entreaty. To that end keep alert and watch with strong purpose and perseverance, interceding in behalf of all the saints (God’s consecrated people).