The last thing any of us wants to be is an expert on demons and spirits. It's possible to have an unhealthy interest in such realities. On the other hand, none of us wants to be unaware of such things. The apostle Paul frequently refers to demonic spiritual “powers” which inspire false religions and oppose and undermine God’s work and God’s people. We live in the same world. The same demonic spiritual powers are at work today. But the same God who overcame them in Ephesus overcomes them in our day. And he does it through the same means he used in Paul’s day: the message of Jesus. Paul’s time recorded in Acts 19 is testimony for you today: the risen Jesus, your Good Shepherd, will protect you, his sheep, from every evil spirit.