R' Avraham Azulai's Hesed L'Avraham
Knowing and Recognizing when is the End of Days.
Hesed L'Avraham (5:35), explaining the secret of the exile, and knowing the end. Human history is understood as having an “expiration date,” at which time, ready or not, Mashiah does come.
Human history is finite and determined. Each generation successively falls furhter and further away from collective enlightenment, and falls deeper into ignorance, apathy, extremism and narrow-mindedness.
How far we can slide as a race is predetermined. If we cannot climb out of the pit that we dig for ourselves, we can continue falling deeper and deeper into it, until we hit rock bottom. Yet, as we hit that bottom, we find the bottom not to be made of stone, but more like an egg shell. We find that Higher reality is cyclical. It exists above us, and below us and all around us. By knowing just how far we have fallen from the Primordial Light, enables us to measure how much more (how much shorter) we are from the messianic light that is coming.