Man’s spirit has God-Consciousness, Knows God’s Voice, and is able to Communicate with Him.
BUT after the fall of Adam, his spirit became dead to God.
Thereafter the spirit of Adam (and of all his descendants) was so oppressed by the soul that his spirit was knit intimately with the soul.
When a person is Saved, though, his spirit Becomes Alive to God;
BUT due to the close uniting of the spirit with the soul for such a long period, it Requires the Word of God to Divide or Separate them.