Spiritual activity always seems bring spiritual attack. No one plans a mission trip without facing a barrage of demonic distractions. Years ago I went to a Continuing Witness Training Clinic. That week our bank contacted my wife that we were hundreds of dollars in overdraft. It was a mistake on the part of the bank. But they didn't figure that out until the next week. If I remember right my poor wife also had to deal with a plumbing crisis that week. I believe God allows such spiritual attack, among other reasons, so we will pray. We should not be surprised at the enemy’s attacks when an entire church begins praying like we have never prayed.
But note what Jesus said about satanic attack in Luke 10:19.
“I have given you authority to trample on snakes and scorpions and to overcome all the power of the enemy; nothing will harm you.”
I am greatly encouraged by these words. But I do not for a moment think Jesus wants us to try to appropriate this promise without prayer.
Ephesians 6 is the most familiar passage in the New Testament dealing with spiritual warfare. There Paul by the Holy Spirit tells us to put on the all the armor of God because we struggle against spiritual forces. And he lists as our armor fundamentals of the Christian faith, truth, righteousness, the gospel, faith, salvation, the word of God. And the call to our spiritual protection concludes with a broad call to prayer.
“And pray in the Spirit on all occasions with all kinds of prayer and requests. With this in mind, be alert and always keep on praying for all the saints.”