Said Rabbi Jose: "This interpretation of the word 'sath' is very good and excellent, but I have heard another interpretation, which is, God said to Cain: 'If thou doest well, the impure spirit [רע ra] will not abide with thee nor cleave unto thee, but if thou doest not well, sin or evil [חטאת] lieth at the door' (ready to overtake thee). By the word 'door' (lepathach) is meant justice or punishment from on high, for the great tribunal of divine justice is designated by this same word, door or gate, as it is written, 'Open unto me the gates of justice' (Ps. cxviii., 19). By 'sin lieth at the door' is meant the impure spirit [רע ra] which if thou fallest into its power, will bring thy soul before the tribunal of divine justice, when it will be hurled to destruction and become dissolved into the original element out of which it has been formed and produced." - ZOHAR