This article analyzes the organismic tandem of the Tetragrammaton (Y HWH ) and the divine name Ehyeh as it appeared in the writings of early kabbalists and describes how they developed distinct strands of biblical, rabbinic, and medieval Jewish literature into a unique theosophical formulation of the Godhead in which the names Ehyeh and Y HWH are of central importance and the primary expression of the divine. This examination illuminates how the early kabbalists developed a conception of the Godhead that followed the internal logic of central biblical verses as well as phonetic considerations, in contrast to the more arbitrary sefirotic emanation of the Godhead.