What is the soul? It is the life-giving quality, the energizing principle, in union with the organism, or body, forms the living, intelligent being. BODY + BREATH OF LIFE = SOUL (Genesis 1:20,30; Genesis 2:7). 

The word soul in this connection is from the Hebrew which means literally “a breathing creature.” Man does not possess a soul, but he is a soul. The entire being is the soul. Job’s expression must be understood in the poetic sense and signifies that man would suffer and mourn from his inmost being, as in, “from the bottom of his soul.” 

Additional Resources:
Christian Questions Podcast
Episode #1378: “Do I Have an Immortal Soul? (Part I)”
Digging into the Old Testament teaching on the nature of humanity
Preview Video
CQ Rewind Show Notes

Episode #1379: “Do I Have an Immortal Soul? (Part II)”
Digging into the New Testament teaching on the nature of humanity
Preview Video
CQ Rewind Show Notes

For children, parents and Bible class teachers:
Animated video: What is the soul?