From the back cover of The Psychology of Pastoring Styles:
God created the body, soul and spirit of humanity. It is obvious He understands the methods and ways of communicating to the total person. The word of God searches the body, soul and spirit. Could it be: the ultimate goal of pastoring is to feed the spirit of man; shepherd his soul; and to guide the body into sanctification?
The practices of the medical field addresses the biological needs only; others attempt to rectify the problems of the mind but the preaching of the gospel alone reaches the body, soul, and the spirit.