(Ps. 91:4)... and beneath His wings you will take shelter... these are Hei-Hei ה־ה, for the letter Zayin ז is a Vav ו which is his limb... comprised of Yod-Vav י־ו, its body is ו Vav, its head is י Yod, its wings are ה־ה Hei-Hei, and thus: beneath His wings you will take shelter...
(ibid)... shield and armour is His truth, shield and armour are Higher (Binah) and the Lower (Malkhut) Shekhinah, His truth – this is the Middle Pillar (Tipheret), its head is Higher Ḥokhmah. The Righteous-One (Yesod) is “in His image, like His likeness”.