The apostles Paul, Peter, and John all tell us that believers are engaged in a spiritual battle to defeat the present evil world. Their understanding that believers are currently engaged in Spiritual Warfare underpins The New Testament. We are at war with the rulers and authorities of the unseen world, but our weapons aren’t physical or tangible. Our weapon is truth.
Finally, be strong in the Lord and in his mighty power. Put on the full armor of God, so that you can take your stand against the devil’s schemes. 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.
Ephesians 6:10-12 NIV
Be alert and of sober mind. Your enemy the devil prowls around like a roaring lion looking for someone to devour. Resist him, standing firm in the faith, because you know that the family of believers throughout the world is undergoing the same kind of sufferings.
1 Peter 5:8,9 NIV
For though we live in the world, we do not wage war as the world does. The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.
2 Corinthians 10:3-5 NIV
For every child of God defeats this evil world, and we achieve this victory through our faith. And who can win this battle against the world? Only those who believe that Jesus is the Son of God.
1 John 5:4–5, NLT
If we find ourselves living in God’s world, but in Satan’s kingdom, we have to conclude that spiritual warfare is more than metaphorical and more than just a personal internal struggle against temptation.
The apostle Paul experienced spiritual warfare personally. He lived everything he wrote in Second Corinthians, appeared to have lost many battles, yet in the end, he was the primary person God used to establish the church among the Gentiles.
We put no stumbling block in anyone’s path, so that our ministry will not be discredited. Rather, as servants of God we commend ourselves in every way: in great endurance; in troubles, hardships and distresses; in beatings, imprisonments and riots; in hard work, sleepless nights and hunger; in purity, understanding, patience and kindness; in the Holy Spirit and in sincere love; in truthful speech and in the power of God; with weapons of righteousness in the right hand and in the left; through glory and dishonor, bad report and good report; genuine, yet regarded as impostors; known, yet regarded as unknown; dying, and yet we live on; beaten, and yet not killed; sorrowful, yet always rejoicing; poor, yet making many rich; having nothing, and yet possessing everything.
2 Corinthians 6:3-10 NIV
Obviously, Paul knew firsthand that believers would need the full armor of God.
Put on all of God’s armor so that you will be able to stand firm against all strategies of the devil. For we are not fighting against flesh-and-blood enemies, but against evil rulers and authorities of the unseen world, against mighty powers in this dark world, and against evil spirits in the heavenly places. Therefore, put on every piece of God’s armor so you will be able to resist the enemy in the time of evil. Then after the battle you will still be standing firm.
Ephesians 6:11-13 NLT
All the apostles experienced spiritual warfare personally and tried to prepare future believers.
We are human, but we don’t wage war as humans do. We use God’s mighty weapons, not worldly weapons, to knock down the strongholds of human reasoning and to destroy false arguments. We destroy every proud obstacle that keeps people from knowing God. We capture their rebellious thoughts and teach them to obey Christ.
2 Corinthians 10:3-5 NLT
Stay alert! Watch out for your great enemy, the devil. He prowls around like a roaring lion, looking for someone to devour. Stand firm against him, and be strong in your faith. Remember that your family of believers all over the world is going through the same kind of suffering you are. In his kindness God called you to share in his eternal glory by means of Christ Jesus. So after you have suffered a little while, he will restore, support, and strengthen you, and he will place you on a firm foundation.
1 Peter 5:8-10 NLT
So humble yourselves before God. Resist the devil, and he will flee from you.
James 4:7 NLT
But you belong to God, my dear children. You have already won a victory over those people, because the Spirit who lives in you is greater than the spirit who lives in the world.
1 John 4:4 NLT
Can anything ever separate us from Christ’s love? Does it mean he no longer loves us if we have trouble or calamity, or are persecuted, or hungry, or destitute, or in danger, or threatened with death? No, despite all these things, overwhelming victory is ours through Christ, who loved us. And I am convinced that nothing can ever separate us from God’s love. Neither death nor life, neither angels nor demons, neither our fears for today nor our worries about tomorrow – not even the powers of hell can separate us from God’s love.
Romans 8:35,37-38 NLT