The numerical value of YHVH is 26, and the numerical value of Adonai is 65. Uniting these two names yields the sum of 91. The letters of the Hebrew word Amen (Alef Mem Nun) also add up to 91. Being aware of this numerical equivalence, whenever one says “Amen” at the end of a prayer or blessing using the proper Kavanah/intention, one is mentally uniting the Divine Names YHVH and Adonai, and theurgically uniting the Holy One and His Shekhinah.
