Behold this amounts to Mem-Tet מ־ט (=49) [Var. Metatron], which are the ‘49 pure faces’, alluded to by (Deut. 6:4) Hear O Israel Y”Y ELoQeYNU Y”Y is One, ‘Blessed is the Name of the glory of His Kingdom for ever and ever.’clviLiturgical – ‘Recitation of Shm’a’
Through which, the Lower Shekhinah is purified for Her Husband, in Her miqveh (ritual-pool), [this] which is: (Jer. 17:13) The hope (miqveh) of Israel is Y”Y.
And it is the ‘dimension of stature’. For thus are the letters of miqveh the same as qomah (stature). And they are the closed ם final-Mem (=40) in this mystery: