And indeed, this power does not exist as an intrinsic aspect of the Sefirot. (The Sefirot themselves are on the level of Godly light, whereas the separate realms which derive from this power are creations.) That is to say, it cannot simply be equated with the last level of the lights of the Sefirot (Malchut). This is because it comes forth according to the principle of being out of nothingness, which is not a gradual process but a radical leap. (Thus Tzur Tak, the power to produce being out of nothingness, is not simply a level on the scale.
Rather it is a unique power that is impossible for us to understand since being out of nothingness is intrinsically beyond our comprehension.) Yet with the coming into existence of separate realms (Beriyah, Yetzirah and Asiyah) – an actual creation of being out of nothingness – an extension is found to exist from the Sefirot (the Godly light of Atzilut) over these separate realms so as to bring them into existence as branches of that extension.