There is a sentence on Wikipedia about Kabbalah, but unfortunately, there are no sources for it, and I would like to know the sources (if they exist).
The sentence says: "Among the problems considered in the Hebrew Kabbalah is the theological issue of the nature and origin of evil." In the views of some Kabbalists, this conceives "evil" as a "quality of God," asserting that negativity enters into the essence of the Absolute.
Does someone know who those Kabbalists are?