The soul of man is that inner part of man that can't be seen with the human eye. Only God knows the soul of man. The bible refers to the soul as the heart of man or belly. It simply means to be deep within the person, of whom they really are. Any body can put on fancy clothing and look good on the outside, but deep in there soul they struggle with a sickness of sin, or maybe additions. Only God knows the heart of man and evil ways, Jeremiah 17:9-10 tell it like this, "The heart is deceitful above all things, and desperately wicked; who can know it? I, the Lord, search the heart, I test the mind, even to give every man according to his ways, according to the fruit of his doings." Now, this leads to the point of the spirit and what, and how it operates. I called this writing "Spiritual Sickness," because our spirit is sick, and remains so until we realize the cure of the sickness, and how it came about.