The entire governmental order and everything that exists are all a single order arranged in the underlying Likeness of Man. Adam Kadmon — Primordial Man — is this single order.
The entire cosmic government is one order, arranged in the form of a Likeness of Man. The whole structure is integrated, not a multiplicity.
Up to this point Klach has discussed the Sefirot one at a time, the Emanator, the prophetic forms. Op. 12 takes a structural step. The whole apparatus — Sefirot, worlds, creatures, governance — is a single integrated system, organised in the form Kabbalah calls the Likeness of Man (dmut adam). The technical name for this primordial integrated order is Adam Kadmon. Op. 12 introduces the term that becomes the structural template of everything that follows.
The phrase Likeness of Man is striking and easy to misread. It does not mean that God looks like a person, or that the cosmic structure is anthropomorphic in a poetic sense. It means that the integrated structure of the Sefirot — the way they relate, depend on each other, feed into each other — has the same logical form as the integration of a human body's limbs and organs. A body is not ten separate things; it is one organism whose parts function together. The cosmic government has the same kind of integration.
Klach gives the structure a number: 613 limbs and organs (paralleling the 613 commandments). The number is the same in both registers because the integration-pattern is the same: a single system with 613 articulated parts, each contributing, none independent.
Adam Kadmon (literally "Primordial Man") is the name for this structure as a cosmogonic entity. Adam Kadmon is the first ordered emanation — the original integrated form that fills the contracted space the Tzimtzum opens. Every later structure (Atzilut, Beriyah, Yetzirah, Asiyah, the named Partzufim) is a garment of Adam Kadmon or operates under Adam Kadmon's ordering. The Likeness of Man is the structural template of the entire cosmos.
This sets up everything technical that follows. When the book later treats the Partzufim — Atik Yomin, Arich Anpin, Abba and Imma, Zeir Anpin (Z"A), Nukva — each of these is a Partzuf (configuration) of the Likeness of Man, articulated in operational detail.
Op. 31 will name Adam Kadmon formally and develop the doctrine cosmogonically. Op. 70 will define a Partzuf in terms that presuppose the Likeness of Man as the structural template. And every named-Partzuf chapter from Op. 74 onward operates inside the integrated form Op. 12 introduces here.