And thus are Israel required, to couple with their partners in silence, with humility, with fear, with trembling and with sweat, with shame. As the earlier sages have established:xxxviiiBT Nedarim 20b ‘like one is forced to do the act by a shed (demon)’ – which is the SheD from ShaDaY (Almighty), for at that time, it passes by the gate.
And this is the mystery of the mezuzah, of which it is stated: (Deut. 6:9) And you shall write them, upon the mezuzot (doorposts) of your houses. It is written as singular mezuzat, comprising zaz mavet∞‘death moves away’.