Luke 4:33 tells us about Jesus going to worship. In the synagogue was a demon possessed man. This devil felt very comfortable in church until Jesus arrived. "And in the synagogue there was a man, which had a spirit of an unclean devil and cried out with a loud voice."
When Jesus walked in, the devil began to scream at Him and said in Luke 4:34,. . . .I know you who you are; the Holy One of God. And Jesus said,. . .Come out! Instantly the man was delivered of the unclean spirit.
Times haven't changed. There are still people hanging around churches who need to be set free from the devil's power.