From section 21 (Op. 119–123) Building of Zeir Anpin in Pregnancy, Suckling, and Maturity To section 22 (Op. 124–126) Daat of Zeir Anpin
Section 21 walked Z"A's global developmental staging. Section 22 zooms in on a single Mochin — Daat — and asks why this Mochin operates so differently from Chochmah and Binah, and why it has the structural role it does. The bridge is the move from Z"A's global growth to Daat as the bridge-faculty inside Z"A.
Op. 123 closes section 21 with the underlying causal mechanism: the alternating rule of Judgment and Mercy causes immaturity (when Judgment dominates) and removes it to bring maturity (when Mercy mitigates). The chapter is structurally crucial — it identifies the operational principle under which the whole growth-cycle runs.
By the end of Op. 123 the reader has Z"A's full developmental picture. What is missing is the interior detail — among Z"A's three Mochin (Chochmah, Binah, Daat), which one does what, and why does Daat in particular get its own three-chapter unit?
Op. 124 ¶1 names Daat as the offspring of Abba and Imma's engrafting via Chochmah and Binah. The chapter then asks the unit's defining question: why does Daat alone spread through the whole of Z"A, while Chochmah and Binah do not?
For Op. 124 to land the section-21 reader must have: the engrafting doctrine (Op. 117); the pregnancy-suckling-maturity stages (Op. 119–123); the alternating rule of Judgment and Mercy (Op. 123). The Daat-as-bridge-faculty role makes sense only against the staged growth picture; without it, Daat spreads is just an isolated assertion.
Op. 125 names the 5/5 distribution of Daat (evenly between Z"A and Nukva) and the reason: Daat alone is the balance-attribute — it stands between Chochmah (pure right) and Gevurah (pure left), partaking of both, and is therefore the natural distributor. Op. 126 closes the unit with the spread of Daat through the body — the operational mechanism by which Daat actually performs its bridging function.
The threading move from Op. 123 to Op. 124 is zoom from global to particular. Op. 123 settled the mechanism of growth at the global level; Op. 124 zooms into a single Mochin to ask why that particular Mochin operates the way it does.
A second threading move concerns the bridging function. Daat is between Chochmah and Binah; it is also between Z"A and Nukva (via the 5/5 distribution); and it is between the upper Mochin and the body of Z"A. The threefold bridging role makes Daat the operationally distinctive Mochin — and the reader should hold the threefold role as Op. 124–126 unfold.
The hand-offs from section 21 into section 22 are:
What is not yet handed off: the Inner and Encompassing Mental Powers (the Tzelem). Section 22 treats Daat as it spreads; section 23 (Op. 127–130) will re-frame the Mochin discussion in terms of inner/encompassing structures — the Tzelem (the Image, drawn from Genesis 1:27) becomes the operative template.
Section 22's citation pattern is comparatively internal — Daat is a Lurianic technical concept and Klach's analysis stays within the Etz Chayim Shaar Mochin de-Z"A citation pool. The Hebrew etymology of Daat (knowledge as bridging — yada meaning both "know" and "join") is invoked implicitly throughout.
Three claims:
With these in hand, the reader is ready for section 23 (Op. 127–130) — Zeir Anpin's Mental States — which re-frames the Mochin discussion in inner-and-encompassing terms: the Tzelem (the Image), which integrates the Mochin, the body, and the surrounding lights into a unified picture.