In this, the sixth chapter, the Alter Rebbe goes on to explain that this applied only during the time when the Divine Presence dwelt among Israel, for then, each Jew’s spiritual sustenance reached him only from the “side” of holiness—from the Four-Letter Name of the Infinite One.

In times of exile, however, when the Divine Presence too is (so to speak) in exile, even the life-force of holiness can be drawn down through a garb of kelipah. It is therefore then possible that even individuals guilty of sins punishable by excision and death by Divine agency continue to receive their vitality, even though their spiritual lifeline to the Tetragrammaton has been severed. This explains why during the era of exile, even those guilty of the abovementioned sins can live long lives. Parenthetically, this also provides them with the opportunity  ...