Zohar and Sefer Etz Chaim

Both texts engage with yesod and sitra-achra through the hermeneutic of sealing/protection. Text 1 (Etz Chaim) emphasizes yesod as a 'seal' (chatom) that protects the gevurot from external contamination by the sitra-achra, describing yesod's role as containing divine severity within a protective boundary. Text 2 (Zohar) presents yesod as part of the bride's adornments through union with the king, then shifts to describe how the bride (malkhuth) 'nurses from sitra-achra' (yanka mi-sitra-achra) during a specific temporal phase when judgments are aroused. Text 1 frames yesod defensively/protectively; Text 2 frames yesod's activity in relation to sitra-achra more as a dynamic process of sustenance/nurturing within cosmic cycles. Both acknowledge yesod's boundary function but differ in whether emphasis falls on containment or on the cyclical flow of divine severity through channels that interface with the Other Side.