Short answer
Sitra Achra is an Aramaic phrase meaning “the Other Side.” In Kabbalah, it refers to the realm of impurity and spiritual separation from God, set against Sitra d’Kedushah, “the side of holiness.”
The words
Sitra means “side,” and achra means “other.” The phrase is used extensively in the Zohar, which was written largely in Aramaic. It is sometimes spelled Sitra Achra, Sitra Ahra or Sitra Achara.
What it refers to
In Kabbalistic thought, the Other Side is not an equal rival to God. It is understood as dependent on the divine and as having a role in making free choice possible. Several ideas are tied to it:
- Kelipot. The “shells” or “husks” that conceal divine light.
- Judgment without mercy. It is often linked to strict judgment cut off from kindness.
- Redemption. Sparks of holiness within it are meant to be raised up through study, prayer and the commandments.
Quick points
- It is not the same as the Christian idea of the Devil, although writers sometimes compare them.
- It is usually discussed as something to avoid, not to engage.
- Interpretations differ among Kabbalistic schools.
Learn more
For a fuller discussion, read Sitra Achra: The Other Side in Kabbalah. For the surrounding system, see Kabbalah Explained and The Ten Sefirot Explained.