The level of a human being is conscious energy. There is no form that a human being is until they are in the the light of their consciousness experiencing life at the level of spirit for that part of life.
The spirit is the experiencer for the level of consciousness at the level of the world one enters. The level of the world is the level of the base collective consciousness. In every new life there is a different spirit to live the level of consciousness through.
The soul is the level of love being lived and is giving the light in consciousness for life to live through. Human beings are conscious energy experiencing life in many mediums in a life continuum becoming love and eventually the very light that help sustains life. The spirit is always the experiencer for the level of consciousness in that life.