Epistle 05 – Part 4 – video podcast podcast Tanya part 4 Epistle 01 - 10 Epistle 05 – Part 3 – audio podcast Epistle 05 – Part 4 – audio podcast Until this point the Alter Rebbe has explained the Talmudic teaching that the World to Come was created by the letter yud: the Sefirah of Chochmah, which this letter represents, is the spiritual source of Gan Eden which is in the World to Come.