Editing The World of Atzilus (section)

== Its Nature ==
Olam HaAtzilus is the first world among the four worlds of ABYA. In Olam HaAtzilus, the actual Ohr Ein Sof dwells. Regarding the ten Sefiros of Olam HaAtzilus, it is said "Ihu v'chayohi chad, ihu v'garmohi chad," meaning that Ohr Ein Sof unites in complete unity both with the lights of Olam HaAtzilus and with the vessels of Olam HaAtzilus, which are called "ten tikunim."

In Olam HaAtzilus, there is no place for existence separate from Elokus - "lo yegurcha ra" (evil cannot dwell with You). Therefore, Olam HaAtzilus is entirely good, as there is no place for evil within it. Olam HaAtzilus includes the ten Sefiros of Atzilus, and the world of Atzilus which consists of the heichalos and medurin, where the souls and angels of Olam HaAtzilus reside.

Olam HaAtzilus was created from Ohr Ein Sof through 'hatzalah' (emanation), meaning that Hashem emanated and separated from Ohr Ein Sof in a way that could unite with Ohr Ein Sof.

==== The Term Atzilus ====
Olam HaAtzilus was created through hatzalah, which has two interpretations:

# Hatzalah in the sense of illumination, like a candle lighting another candle without diminishing itself, and it is essentially the same light. Therefore it is called "Atzilus" - meaning "adjacent to," as it remains united with it (with the light that precedes Atzilus).
# Hatzalah in the sense of separation, as Olam HaAtzilus was separated from the light that preceded it. Therefore, although it is generally called "Ihu v'chayohi chad," etc., it is nevertheless not completely one, but rather undergoes change and is also limited (as there are ten Sefiros, not nine or eleven).