Most Christians do not act or live like they are at war.
Paul tells us explicitly in Ephesians 6 that we are at war.
Finally, be strong in the Lord and in the strength of his might. Put on the whole armor of God, that you may be able to stand against the schemes of the devil. For 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. 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. Stand therefore, having fastened on the belt of truth, and having put on the breastplate of righteousness, and, as shoes for your feet, having put on the readiness given by the gospel of peace. In all circumstances take up the shield of faith, with which you can extinguish all the flaming darts of the evil one; and take the helmet of salvation, and the sword of the Spirit, which is the word of God, praying at all times in the Spirit, with all prayer and supplication. To that end keep alert with all perseverance, making supplication for all the saints, and also for me, that words may be given to me in opening my mouth boldly to proclaim the mystery of the gospel, for which I am an ambassador in chains, that I may declare it boldly, as I ought to speak.
(Ephesians 6:10-20 ESV)
A lot of Christians in churches today have a sword and shield but they are more collector’s items than they are functional weapons. The shield might hang on the wall and the sword is probably on a stand inside of a glass case. They serve no purpose other than to be looked at. These weapons have not seen a fight in weeks – sometimes years.
These same Christians are just not proficient with the sword. They do not know how to use it. They do not train with it. They do not sharpen it. If you are going to be intentional about fighting a war in which your enemy is very good, you need a mentor to train you. If you do not have a mentor, go and find one.
When the battle comes, and you don’t know how to use your weapons, you will go into the fight with a dull sword that you do not know how to use. Trying to fight this way is stupid. You are not likely to damage your enemy with a dull blade. You also leave yourself wide open for attack. If you do not know how to deflect strikes and attacks by the enemy, you are as good as dead.
Paul says that the enemy has flaming darts. Think of it this way:
The devil takes an arrow, coats it in oil and then sets it on fire. The arrow’s potential to do severe damage has now been maximized. The devil picks up his bow and places the flaming arrow in its launching place. He pulls the bow string back as tight and as far as he can. This will ensure a faster speed and greater distance for the arrow. He picks what he believes to be a vulnerable target, takes aim at you and lets the arrow fly.
Are you prepared to defend yourself or are you positioning yourself for the flaming arrow to do the most damage?