Musar su Giobbe 22:25

It is well known that the atmosphere of the world is filled with influences from the Side of Evil. It is especially rife with accusing angels created from the sins and transgressions of human beings hovering about the air of the world, as is mentioned repeatedly in the Zohar (1:190a; 3:196b). Therefore a person must be wary lest they cling to him as he makes his way to the synagogue. He must bear in mind the Zohar’s teaching (3:263b) that to the left of the doorway lurks the Side of Evil. Concerning this was it written, “Sin crouches at the opening” (Bereishis 4:7). The mezuzah, on the other hand, a reminder of the holy Shechinah, is affixed to right. The mnemonic for this is the verse, “The heart of the wise is to his right” (Koheles 10:2). For that is its place. The mezuzah also represents the Divine attribute known as “Rochel.” Were it not for the name Shaddai (inscribed upon the back of the mezuzah) facing him as he exits it would be impossible for a Jew to go out of his house, for the Side of Evil stands to the left of the door. This is alluded to in the acronym of the verse, “Sin crouches at the opening” — Lapesach CHatos Roveitz, which is the exact reverse of the name “Rochel.” Therefore the name Shaddai is needed to subdue it, as it is written, “And Shaddai (the Almighty) will be your fortress” (Iyov 22:25).