Interesting extract from A. W. Pink on body, soul, and spirit

What is below is from Pink's Gleanings In Genesis, 1. Creation and Restoration. (I've bolded some parts.)

5. "And God divided the light from the darkness." Hebrews 4:12 tells us, the Word of God is quick, and powerful, and sharper than any two-edged 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." This is not a figurative expression but, we believe, a statement of literal fact. Man is a tripartite being, made up of "spirit and soul and body" (1 Thess. 5:23). The late Dr. Pierson distinguished between them thus: "The spirit is capable of God-consciousness; the soul is the seat of self-consciousness; the body of sense-consciousness.’’ In the day that Adam sinned, he died spiritually. Physical death is the separation of the spirit from the body; spiritual death is the separation of the spirit from God. When Adam died, his spirit was not annihilated, but it was "alienated" from God. There was a fall. The spirit, the highest part of Adam’s complex being, no longer dominated; instead, it was degraded, it fell to the level of the soul, and ceased to function separately. Hence, today, the unregenerate man is dominated by his soul, which is the seat of lust, passion, emotion. But in the work of regeneration, the Word of God "pierces even to the dividing asunder of soul and spirit," and the spirit is rescued from the lower level to which it has fallen, being brought back again into communion with God. The "spirit" being that part of man which is capable of communion with God, is light; the "soul" when it is not dominated and regulated by the spirit is in darkness, hence, in that part of the six days’ work of restoration which adumbrated the dividing asunder of soul and spirit, we read, "And God divided the light from the darkness."