The only difference between your imaginary eternal soul and consciousness is your stipulation that it be eternal, and above that (I suspect) that it be divine in origin.
Consciousness is an observable, self-validating fact. I don't even need to prove it exists and that I have it. It is self-evident and axiomatic. All of my experience, knowledge, values, emotions, habits and will are attributes of the fact that I am conscious. The unity of those attributes is my soul.
What thing are you talking about?
That isn't a soul. It is consciousness.
https://www.thefreedictionary.com/soul
soul (sl)
n.
"1. The animating and vital principle in humans, credited with the faculties of thought, action, and emotion and often conceived as an immaterial entity.
2. The spiritual nature of humans, regarded as immortal, separable from the body at death, and susceptible to happiness or misery in a future state.
3. The disembodied spirit of a dead human."
"Consciousness
https://www.thefreedictionary.com/consciousness
con·scious·ness (knshs-ns)
n.
1. The state or condition of being conscious.
2. A sense of one's personal or collective identity, including the attitudes, beliefs, and sensitivities held by or considered characteristic of an individual or group: Love of freedom runs deep in the national consciousness."
"con•scious•ness (ˈkɒn ʃəs nɪs)
n.
1. the state of being conscious; awareness.
2. the thoughts and feelings, collectively, of an individual or of an aggregate of people.
3. full activity of the mind and senses, as in waking life: to regain consciousness.
4. awareness of something for what it is; internal knowledge: consciousness of wrongdoing.
5. concern, interest, or awareness: class consciousness.
6. the mental activity of which a person is aware, contrasted with unconscious thought.
7. Philos. the mind or the mental faculties, characterized by thought, feelings, and volition. "
If you don't believe that something exists, fine, but don't use a word that refers to something you don't believe exists and apply it to something else.
That makes no sense.
The word soul has always referred to an eternal spiritual form of consciousness, and NOT just consciousness