Mark 1:21-28; Luke 4:33-37
Many people don't associate demon possessed people with places of worship. Yet most of the demons that Jesus cast out were encountered in the church. Why would demon possessed people be in church?
In some cases, the people were there because they were seeking help. The church offers people the cure and attracts those who are sick.
In other cases, the devil sows these types of people in the church to spread spiritual disease. A church that is teaching the true Word of God should either try to evangelize these individuals or make them so convicted that they move on. Sad to say, demon possessed people can thrive in most religious settings.
We always need to show love for the sinner as Jesus did, but we should cut the devil no slack. If a person wants to keep an evil spirit on the inside of them, they should not feel at home in church.
Letting the Spirit of God live through us as He did through Jesus we will either make people mad or glad, but there will not be indifference.