We as people comprise a soul, a spirit, and a physical body.
The soul is the sum of mind, emotions and will.
These are the teachings of deliverance ministers who cast out devils. They find that the spirit of one who has accepted Christ is "sealed unto the day of Judgment". But, the soul and body are open to attack.
While disease cannot touch the spirit, the will, mind, and emotions are subject to attacks of disobedience, corrupt thoughts and wild emotions. The body, too, can be attacked by sickness.
So, Soul = mind, will, & emotions.