If the personality has been unevenly developed if its forces have not been properly harmonized with each other and defects remain in thinking feeling and willing then at the threshold of illumination these defects will become magnified and overstimulated by the upwelling soul power and lead to adverse psychical results

What is the correctly punctuated version of this sentence?
If the personality has been unevenly developed, if its forces have not been properly harmonized with each other and defects remain in thinking, feeling, and willing, then at the threshold of illumination these defects will become magnified and overstimulated by the upwelling soul power and lead to adverse psychical results.