What is the main function of a shepherd? It is to feed the sheep.
Then what is the main function of a pastor? It is to ensure that all of the crowd he manages has food, shelter, some rest, etc.
This was neglected because it was taught that the service of the pastor is “spiritual” and thus does not concern bodily matters.
My theory of human soul is that “soul” is a backup of the brain. Science has indeed proved that people think by and are controlled by the brain. If the human body is put into a too difficult condition, this may (sometimes quite badly) influence human mind and emotions.
Read more on my theological theories in the following two books: