Ephesians 6:12 (ESV)
12 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.
It sounds too much like the boogie man when we speak of evil spirits or demons or the activity of Satan. Many believers choose to avoid thinking like this. They want everything to have a psychological or circumstantial reason. They like to think of sin as a human flaw rather than a spiritual cooperation with an evil force. They speak of Satan as if he is detached from things. They look at his actions as mere consequences of the Fall. In other words, they think sin entered into humanity through the sin of Adam and Eve but they do not see Satan as actively working to entice sin in the world today.
Surely, there are those who bring spiritual warfare to ridiculous levels. They think of demons hanging around certain objects which were used in sinful activity. These demons are like ghosts who haunt a certain object or place. These demons won't affect you as long as you stay away. This is the stuff for Hollywood movies but not for true spiritual warfare.
Satan opposes the work of God. He opposes God's creation. He opposes life itself. He opposes godly worship. He opposes prayer, witnessing and following God in faith. He is constantly active to see that all that God loves is destroyed. He stands continually asking for permission to attack God's creation. He sends his demons to do as much as they are allowed.
Yet, Christians for the most part spend very little time in prayer. They do not see recognize Satan's attacks. They do not put on the full armor of God. So, Satan attacks them where they are vulnerable. He attacks the truth, righteousness, the gospel and even the salvation of the believers. He keeps them so concerned about the world that they spend no time in the Word of God. Turning to God's Word each day would have him running for this is the sword placed in the believers' hands to attack him.
Therefore, Satan continues to attack churches and believers because he is largely unopposed. The leaders of a church see decisions as political rather than spiritual. They work on procedures for business meetings rather than prayer for God's will. They get support from others to do what they want. They speak badly of each other and do not recognize their own participation with evil when they poison the spirit of the church.
Many believers think of prayer as a sideline activity. They believe the decisions to build a new building or to launch a new program are the activities on the field. They see prayer like cheers which encourage the team. They don't know that prayer is where the battles are fought.
The same is true of a daily quiet time. The Word placed in their hearts each morning give them a weapon to attack what they will face during the day. The Bible says that resisting Satan will cause him to flee from us. How are we going to oppose him without God's Word? This is the very means Jesus opposed him. Yet, for some reason we want to make our battle with Satan hand-to-hand rather than have a sword.
So, put on your full armor. Satan has come to oppose you today. You had better be ready.