Why don't we cast out demons?

The same reason we don't order one piece of fried chicken for a church lunch...

The same reason we wear life-jackets on the lake....

The same reason we bury our dead....

Because if we simply move demon-deliverance into the realm of the other miracles of Jesus we can more easily see how it would look to misread and misappropriate the teachings of Christ.

There are no commands or instructions in Scripture for us to repel or cast out evil spirits…
...With virtually every miracle Christ does, we are told or shown the purpose; we are not told to do likewise. –David Powlison

David Powlison writes:
The classic texts on spiritual warfare - Ephesians 6:10-20; James 3:14-4:12; 1 Peter 5:6-11 - teach a mode of fighting the devils bid for lordship that centers on the Word of the living God, faith, repentance, prayer, and obedience in the power of the Spirit. There is no hint of exorcistic methods in these passages, because the Bible does not view the problem of sin, especially in Christians, as linked to an indwelling demon who must be evicted.

Although the practice of exorcism has enjoyed popularity at various times and places in church history, the use of exorcism as a means of accomplishing sanctification or creating conditions for successful evangelism is a recent innovation. Where did this demon deliverance approach to ministry and the Christian life come from? Who teaches it? This view of spiritual warfare has been developing only since the late 1960s. -read more of Powlison's brief article here

Here is a Brief article, summarizing bible's teaching on demons & Satan by JI Packer


Books I rec'd:
Powlison, Power Encounters
Precious Remedies Satan, by Brooks -- Free online here