First printing of the Zohar, the fundamental work of the Kabbalah (Jewish esoteric and mystical teachings), authored by the Talmudic sage, Rabbi Shimon Bar Yochai.
Links: The Kabbalah
Av 20 is the anniversary of the passing of the Lubavitcher Rebbe's father, Rabbi Levi Yitzchak Schneerson (1878-1944), in Alma Ata (currently Almaty), Kazakhstan. Rabbi Levi Yitzchak was Chief Rabbi of Yekaterinoslav (currently Dnipro), Ukraine, and was arrested and exiled to Kazakhstan by the Stalinist regime as a result of his work to preserve Jewish life in the Soviet Union.
Links:
A Brief Biography
Rebbetzin Chana Scneerson's biography, which includes her account of her husband's heroism, arrest and passing.
If He loathes evil, then why does He allow it in His world? How can He breathe life into a world while all that is good and beautiful is ravaged by that which He hates?
It must be that His hatred of evil is not like the hatred of a mortal being for those who oppose him. Nothing can oppose Him, none of His creatures can cause Him harm. To Him, darkness is light and light is darkness, the wicked and the righteous are equal in their insignificance.
He rejects evil not for any reason, but only because He has chosen to reject these things, and that very rejection is what brings evil into being.
So too, He has chosen that those who vanquish evil will be called good. This, too, is a decision from His very essence, one that defines the very reality of things.
At the very core of reality lies the freedom of choice.