In the Middle Ages, textual amulets--short texts written on parchment or paper and worn on the body--were thought to protect the bearer against enemies, to heal afflictions caused by demonic invasions, and to bring the wearer good fortune. In Binding Words, Don C. Skemer provides the first book-length study of this once-common means of harnessing the magical power of words.

Textual amulets were a unique source of empowerment, promising the believer safe passage through a precarious world by means of an ever-changing mix of scriptural quotations, divine names, common...