The purpose of suffering lies beyond this world, in a realm we cannot see with our physical eyes. The most that can be revealed in this world is through a Bat Kol – a faint echo of a voice – for those willing to hear it. It is a matter of belief. It has to be, because this side of death we cannot see what lies beyond. Here we cannot see that for the soul there is no death, only eternal life.
Adapted from Garden of the Souls: Rebbe Nachman on Suffering, by Avraham Greenbaum