Now the second question. Some feel that Christians can invite an evil spirit into their lives and hand over control of their bodies voluntarily. But note:
• Mt 12:29 Or how can anyone enter the strong man’s house and carry off his property, unless he first binds the strong man? And then he will plunder his house.
• Jn 14:23 Jesus answered and said to him, “If anyone loves Me, he will keep My word; and My Father will love him, and We will come to him and make Our abode with him.
• Mt 12:43-44 Now when the unclean spirit goes out of a man, it passes through waterless places seeking rest, and does not find it. Then it says, ‘I will return to my house from which I came’; and when it comes, it finds it unoccupied, swept, and put in order.
• 1 Co 3:16 Do you not know that you are a temple of God and that the Spirit of God dwells in you?
• 1 Co 6:19 Or do you not know that your body is a temple of the Holy Spirit who is in you, whom you have from God, and that you are not your own?
• 1 Jn 4:4 You are from God, little children, and have overcome them; because greater is He who is in you than he who is in the world.
I believe evil spirits cannot possess a genuine Christian because:
• Demons can plunder a man’s house (his body) only if they can bind the man.
• An unsaved person’s house (body) is unoccupied, but genuine Christians are indwelt by the Holy Spirit and have the Father and the Son living in their hearts.
• He who is in us (God) is greater than he who is in the world (Satan).
• Therefore the devil and demons can’t take over a true Christian. They can only attack him from the outside.
Lastly, what about Judas?
• Mt 26:24 The Son of Man is to go, just as it is written of Him; but woe to that man by whom the Son of Man is betrayed! It would have been good for that man if he had not been born. (Also Mk 14:21; Lk 22:22)
• Lk 22:3-4 And Satan entered into Judas who was called Iscariot, belonging to the number of the twelve. And he went away and discussed with the chief priests and officers how he might betray Him to them.
• Jn 13:2 During supper, the devil having already put into the heart of Judas Iscariot, the son of Simon, to betray Him,
It would have been better if Judas had not been born. I don’t know why, but he was foreordained to betray Jesus to accomplish God’s plan of salvation. He was never a genuine Christian.