Musubi is the power of generation, binding and growth in Shinto thought, from a verb meaning to tie or to join, and understood as the creative force by which things come into being and are connected to one another. It is among the concepts most often identified in modern Shinto theology as expressing the tradition's fundamental orientation.
Its textual anchor is the opening of the Kojiki (712). The first kami to come into existence on the plain of high heaven are Ame-no-Minakanushi, then Takamimusubi and Kamimusubi, two of the first three carrying musubi in their names, and appearing before any narrative of shaping or making. Creation in this account is not fabrication by a craftsman working on material but a coming-into-being, and the musubi kami are associated with that generative process rather than with an act of will directed at something already there.
The concept has been given a great deal of weight in modern interpretations of Shinto, particularly by the Edo-period kokugaku scholars and their successors and in twentieth-century shrine theology, where musubi is presented as a principle of creative harmony underlying nature, human community and the relation between kami and people. Historians of Shinto note that this systematic theological use is substantially a modern construction built on older textual material, and that reading it back as the ancient meaning of the term is questionable. The caution applies broadly: Shinto was for most of its history a body of practice, local shrine tradition and myth rather than a body of systematic teaching, and much of what is presented as its doctrine was articulated in the last three centuries in response to particular intellectual and political circumstances.
The word's ordinary senses remain entirely live and are regularly used in explaining it. Musubu is to tie; the same root appears in the tying of ropes and knots and in the word for a rice ball formed by pressing it in the hands. Popular usage extends it to the forming of relationships and to matchmaking, and the association of musubi with the tying of bonds between people underlies the practice of the enmusubi shrines that specialise in prayers for relationships, a modern and commercially successful development that nevertheless draws on a genuine semantic connection rather than inventing one.