The term ‘Twelve’ occupies a remarkably diverse terrain within the depth-psychology corpus, functioning simultaneously as a symbolic integer, a structural principle of recovery programs, and an archetypal numerological quantity. In Jungian and allied analytical traditions, twelve operates as a number of wholeness and cosmic ordering: Edinger traces it through the zodiacal circle, the twelve tribes of Jacob, the twelve apostles, and the pantheons of antiquity, each expressing a ‘twelve-fold differentiation of the circle of the year.’ Von Franz, working alchemical and apocalyptic material, encounters the twenty-four elders of Revelation as a doubling of the twelve, linking tribal and apostolic symbolism to the opus of transformation. Thielman’s New Testament theology deploys twelve as the signature number of the people of God, with 144,000 decoded as twelve times twelve times a thousand. In the vast clinical and recovery literature that dominates the corpus, ‘Twelve’ designates the structuring grammar of Alcoholics Anonymous and its cognate programs — the Twelve Steps, Twelve Traditions, and Twelve Promises — which Peterson, McCabe, and Schoen each interpret, through a Jungian lens, as a modern myth of individuation and expanding consciousness. The tension between the numinous-symbolic register and the pragmatic-therapeutic one is the central drama of the term’s usage across this library.