It is the other components that make up a human being–the soul (mind, will and emotions) and the body–that are the targets of demonic attack. Demons can dwell in those areas of a Christian’s life. So when we say that a Christian is demonized or possessed, we are not saying he has a demon in his spirit but in some part of his soul or body.
To illustrate this truth, the Lord reminded us of the biblical account of Jesus’ going into the temple and cleansing it of thieves and moneychangers. The Greek word used for “drove out” in this account is ekballo, which means “to expel or drive out.” It is the same word that is used in Mark 16:17: “In My [Jesus’] name they will cast out demons.”
We know that according to the Bible God’s children are the temple of the Spirit of God (see 1 Cor. 3:16). In the Old Testament the temple had three parts: the holy of holies, the holy place and the outer court. This picture is a type or representation of who we are as His temple today.
The shekinah glory of God, or God’s “presence,” was in the holy of holies. This part of the temple represents our spirits.
But when Jesus went into the temple to drive out the thieves and moneychangers, He did not go into the holy of holies. He went into the outer court, where these evildoers were carrying on their business transactions.
The whole account is a picture of deliverance–of what Jesus wants to do in our temples. There may be demonic thieves in our lives that are operating in our outer courts (bodies or souls). Even though they cannot enter the holy of holies (our spirits), Jesus wants them expelled because the temple of God was never intended to be a place for thieves to operate. It is meant to be a place of worship and a place of prayer.
A Covenant Right
Those who believe that the ministry of deliverance is not for believers need to reconsider their position. The truth is, rather, that deliverance is not for the unbeliever.
What good would it do to cast demons out of an unbeliever, unless he is planning to get saved? Unbelievers cannot maintain their deliverance. In fact, according to Luke 11:24-26, after undergoing deliverance, the unsaved person is subject to receiving seven times as many demons as he had before.
The ministry of deliverance is the covenant right of believers. Like every other blessing from God–healing, prosperity, miracles and so on–it is promised only to His covenant people, those who believe in Jesus and come to God through Christ’s blood. God, in His mercy, will bless people outside the covenant because He is merciful. But primarily, His blessings are based on covenant.
Curt Landry 
Michael L. Brown 
Rabbi Eric Tokajer