The devil has tricked churches into giving up deliverance ministry and has spread many false doctrines like Cessationism the ceasing of spiritual gifts so that people won’t bother praying to God for them and then people won’t attack his kingdom.
Jesus cast out many demons out of people when he started his ministry matt 8:16 the apostles healed many people that were possessed acts 5:16-18
Luke 10:19 King James Version (KJV)
19 Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.
17 And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues;
18 They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.
1 Corinthians 4:20
For the kingdom of God is not in word, but in power.
Deliverance is a big threat to satans kingdom, when deliverance is ministered in churches or where ever and people have demons cast out of them in jesus name the two kingdoms manifest and go to war with each other, both Gods kingdom and satans kingdom.
Bible says in 2 corith 10:4 are weapons are not carnal but to the pulling down of strongholds. The real battle is in the spirit realm and then manifest in the physical. When ever people are delivered from demons it makes an open show of satan and his kingdom and glorifies God and his kingdom plus its where satan does the brunt of his work through his demons and his kingdom.
It destroys his kingdom so he’s infiltrated the church and spread false doctrine to turn people away from deliverance and made them think that its not important and that Christians cant have demons in them.
People God has given us spiritual gifts for this very purpose, healing with laying of hands, tongues, discerning of spirits, spirit of wisdom to wage war against satans kingdom and to glorify God and his kingdom and to save souls so why aren’t we using them people? We’re supposed to
15 Insomuch that they brought forth the sick into the streets, and laid them on beds and couches, that at the least the shadow of Peter passing by might overshadow some of them.
16 There came also a multitude out of the cities round about unto Jerusalem, bringing sick folks, and them which were vexed with unclean spirits: and they were healed every one.