זוהר שמות — דף רלא ע”ב

Cain killed Abel by biting him like a serpent until his soul departed, for both were rooted in the same impure side. Adam, seeing Abel's death and Cain's exile, separated from his wife for one hundred thirty years and fathered impure spirits. He then rejoined his wife and fathered Seth in his own image and likeness. Eve is the true woman created with Adam face to face, hence it is said this one shall be called woman. The ephod and breastplate are bound together in the secret of back and front, and the Tabernacle mirrored all the works of the upper and lower worlds.