A hypothesis of the fall of man:
In the book of Genesis we witness the fall of man. Before the fall Genesis records man ability to walk with God person to person.
Man chose to break away from the light of God and then find themselves out of the range of God.
What I am I getting at? Light vibrates at the highest frequency. We are created beings of light to share in fellowship with God. We chose then the base things and denied the light. This sent humanity down to a lower vibration then God placing us in a type of hell on earth outside of the realm of God.
The fall then is not a fall into what many Christian’s think of sin, it is sin in the definition itself as missing the desired goal. Essentially we lowered our frequency giving us the inability to see God as we once did in the garden.
So then this great work, this alchemy, this transformation through Christ is to regain as much as possible the vibration closer to God, then reunite with God upon death.