CAN CHRISTIANS HAVE DEMONS?
The greatest resistance to deliverance ministry seems to come from Christians who don't want to believe that they can have a demon. But consider that Jesus rebuked Peter, when Peter tried to dissuade Jesus from the cross, saying "get behind me Satan!" (Matthew 16:23). Jesus had just finished telling Peter that he would receive "the keys of the kingdom" and Jesus called Peter, "Blessed!" Jesus hasn't changed His mind and is not calling Peter himself "Satan". Rather, Jesus was rebuking Satan who was using Jesus' good friend, Peter, to tempt Jesus.
This is strong evidence that demons can be at work in the lives of faithful believers.
Check out the full chapter here:
https://rumble.com/v1gssr5-the-gospel-of-matthew-chapter-16.html
Satan uses man's "flesh", the sinful nature, also in Christians if they're not walking by the Spirit. I believe Peter had fallen into pride and so he dared to take the authority to rebuke the Son of God.
Also, if Christian's starts to do things that are a sin (for example participate in yoga, have sex outside marriage) they will open the door for Satan to come into their lives just the same way as happens with non-christians.
Adding to my previous text:
"Open the door for Satan", or more correctly said evil spirits.