For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart.” ~Hebrews 4:12.
OP question: What is the difference between soul & spirit?
Man is spirit with a soul that lives in a body
1 Thes 5:23 And the very God of peace sanctify you wholly; and I pray God your whole "spirit and soul and body" be preserved blameless unto the coming of our Lord Jesus Christ.
(NOTE: We are spirit, soul & body)
Heb 4:12 For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the "dividing asunder of soul and spirit", and of the joints and marrow, and is a discerner of the thoughts and intents of the heart..
(NOTE: Man can't physically see nor separate soul & spirit, GOD CAN)
Your soul is your thoughts & emotions that direct the actions we take. And functions only, in relation with our body. Our spirit is the eternal part of each of us. Your body, well look into a mirror.
God is Spirit: John 4:24. A spirit doesn't have flesh and blood. Luke 24:39
God who is Spirit. Breathed His life giving spirit into mans body:
Gen 2:7. And man became a living soul.
(NOTE: It's only a "living soul" in relation to & in conjunction with the body. When the body dies & the two are no longer one. Yet, the spirit continues to lives on.
Matt 16:26 & Mk 8:36 What would it profit a man. To gain the whole world & lose his soul. (NOTE: A soul can be lost).
Ecc 12:7 Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.
Our choices in this life will determine whether our spirit spend eternity in the presents of God our creator with our soul intact. Or eternity separated from God our creator with our soul being lost.
MORE HELP:
Vine's Expository Dictionary of New Testament Words Topic: Soul, "nepes" noun- self, will, emotions, mind person.
Topic: Spirit,"pneuma" noun, signifies (a) "breath, the breath of life," (b) "wind," "spirit," "breath." See GHOST, LIFE, SPIRIT, WIND.
Post is My Opinion Only.