Demons don’t just possess people, there is something that attract them to a person. Once a person is delivered, it is important that the person be taught how to maintain a righteous life. Proverbs 11:9 The hypocrite with his mouth destroys his neighbor, But through knowledge the righteous will be delivered.
After Jesus delivered the person who was sick for 38 years, he followed up with teaching and that’s what will make the person maintain. John 5:14 Afterward Jesus found him in the temple, and said to him, “See, you have been made well. Sin no more, lest a worse thing come upon you.” When there is no maintenance after a person is delivered the demons will com for re-match and find the person not prepared. Luke 11:24 “When an unclean spirit goes out of a man, he goes through dry places, seeking rest; and finding none, he says, ‘I will return to my house from which I came.’