Editing Techiyat HaMeytim - Resurrection of the Dead (section)

==== The Body Will Also Rise ====
The simple interpretation of "All Israel have a portion in the World to Come" is souls in bodies, and so have some commentators on the Mishnah explained the reason "as it is said, 'And Your people are all righteous... the work of My hands, in which to take pride,'" that the repetition of "branch of My planting" and "work of My hands" refers to the soul and the body.

The explanation based on what is taught is that the Essence's choice is specifically in the body and not in the soul, and this is the reason why all Israel will rise, even those who did not merit Gan Eden (Paradise), as will be explained.

Nevertheless, there is a deficiency in the body in that its essential connection is not inherent to the body itself but comes from the Essence, and therefore as long as this is not revealed through Torah and mitzvot, it is not manifest in the body. In contrast, the soul's connection is revealed, like a son who has a revealed connection with his father. Therefore, specifically regarding Jewish souls, we say that ultimately "no one will be cast away from Him." Based on this, the Rebbe explains, "According to the above, that the revelation of the Divine choice in the body is specifically through the soul, perhaps this explains why those who have no portion in the World to Come in the Mishnah there means that 'their body perishes,'" and the Rebbe references the previous letter and note 5 there.

Finally, he references the talk from Parshat Chukat (notes 52 and 58), where the opposite is explained—that through the soul's activity in the body, the body also becomes eternal. He innovates that "based on this, it can be said that 'no one will be cast away from Him' is (also) due to the body," and adds, "See also Likutei Sichos vol. 6 and what is referenced there, that because of G-d's choice of the body, the body itself becomes eternal, and this is a Mishnah: 'All Israel have a portion in the World to Come—souls in bodies.'"

In any case, the belief in the resurrection of the dead is not that the body will rise, but that the soul will rise in a body, though it does not necessarily have to be in this body.

See above in the entry "Resurrection of the Dead—Part of the Body's Design" and below in the entry "All Israel in the World to Come But Not in Gan Eden."