Answer: We cannot evaluate the past with its dreadful catastrophes and fratricidal wars. Jews fought one another more fiercely than the Romans or Greeks who attacked them. This is how the scrutiny of the shattering takes place. Good and evil blend together, desires intermix with intentions; all the catastrophes and problems happen on earth only to clarify all this.
This is part of the correction! Throughout the history of humankind, we see how much blood has been spilt and how many people have been killed—billions! Wars have been waged constantly; in all places, people have inflicted terrible harm upon one another! To the present day, every day, constant disputes and arguments happen all over the world, and all of that is the clarification of the desire to receive pleasure that has to reveal itself and come to the conclusion that it needs correction.
As a result, it discovers that it needs to correct itself and become one common desire. And when it realizes that it is incapable of doing this with its own power, it starts thinking: What kind of force can help it with this?
At first, a person, by his or her naivety, tries to correct everything with his or her own powers, and it takes a lot of effort and time. And regardless of how much it is explained to one that it is not he who makes corrections, it doesn’t help. One has to get desperate and bang one’s head against the wall a thousand times in order to finally say: “Oh, now I understand that I’m incapable of doing this alone! I need an external force, the Creator, the Light that Reforms!”
Now a person understands and feels from within, in the desire that he has clarified after having banged his head ten times against the wall, that redemption will come only from outside. And then he starts working in this direction and looks for the Light of correction.
But he searches for the Light alone at first, banging his head ten more times, until he suddenly realizes that the Light gets revealed only in a connection with others.
We have to go through all of that. There is nothing we can do about it.
From the 2nd part of the Daily Kabbalah Lesson 11/3/2011, The Zohar