This is the mystery of Yud-Vav-Dalet, HeA-Aleph, Vav-Aleph-Vav – the “expanded” form of the letters Yud-Heh-Vav of MaH contained in Chochmah S’tima’ah. The numerical value of these letters is 39 = (ט"ל, Tet-Lamed) = TaL, “dew” – the Dew of Bedolach (see Opening 89). Here lies the root of the entire governmental order of Justice down below. In terms of the Three Heads, Chochmah S’timaah is in the category of Judgment (in relation to the Skull – Kindness, and the Cavity – Mercy) and is governed from Gevurah of Atik. (Gevurah of Atik is concealed within the Brain, which accordingly has the reddish hue of the Bedolach stone.)
The Expanded Letters Inside Hidden Wisdom
Kalach Pitchei Chokhmah 111:5