זוהר שמות — דף קפג ע”א

One who atones must first atone for himself, then for his household. Likewise, this degree begins by sanctifying itself and going forth in holiness. The secret of Iyov is deep — Cain brought an offering at the end of days toward the left. Israel left Egypt through the merit of circumcision, which removed the foreskin and opened the gate to supernal union. The Holy One Blessed Be He stirred up the accuser against Iyov in order to divert him from Israel at the time of the Redemption.