Forty Two Letters and a Contested Author

The prayer's structure is itself the point: seven lines of six words each, forty two words in total, whose initial letters are read down the page to spell out a forty two letter name of God treated in Kabbalistic literature as one of several expanded divine names alongside the more familiar four letter Tetragrammaton. This acrostic device is what gives the prayer its function in Kabbalistic practice, less as a text to be understood discursively than as a structure to be recited with the hidden name in mind, each surface line carrying an ordinary petition for protection or rescue while its initial letter contributes to the concealed name running underneath.

The attribution to Nehunya ben HaKanah, a first century sage associated in later tradition with early mystical teaching, sits awkwardly against the text's actual documentary history, since no source anywhere close to the first century preserves it, and the earliest manuscripts in which the prayer appears are medieval Kabbalistic prayer books, a gap of a millennium or more between the claimed author and the first surviving copy. This pattern, a text first documented in the medieval Kabbalistic period but retrojected onto a much earlier named sage to lend it authority, recurs across a considerable amount of Kabbalistic literature and is treated by historians of Jewish mysticism as a genre convention of that literature rather than as a claim to be assessed as ordinary historical attribution, since medieval Kabbalists regularly presented new composition as the recovery of ancient, previously hidden teaching rather than as their own innovation.