And here now is a benefit for the soul itself in the completion of the body - to elevate it from height to height, and to add strength on strength and glory to glory. And not this alone, rather even at the time that it is in this world within the body - it has elevation and advantage according to its actions, for the soul of a man who is occupied with Torah and Mitzvot and obtains knowledge of the glory of its owner is not similar to a soul absent from man.
But its elevation cannot reach a point where it can change the body, such that it would be refined in a way visible to the eye, except for the few in number, the remnant chosen by G-d, like Moshe our teacher may he rest in peace, Enoch and Elijah. Excepting them, even though it [the soul] achieves advantage from its actions, it will not achieve so much that it would be seen also in the body. However goodness will not be withheld from their owners in the future, each according to their actions: