Final Kaph ך

Final Kaph (kaf sofit) is the word-final form of the letter Kaph. Five Hebrew letters (Kaph, Mem, Nun, Peh and Tzaddi) take a distinct shape when they fall at the end of a word; these are the 'sofit' or final forms. Final Kaph descends below the line where the ordinary Kaph does not. In standard gematria a final letter counts the same as its base letter (Kaph = 20), but in the extended reckoning known as mispar gadol the five finals continue the number series beyond 400, giving Final Kaph the value 500. As a variant of the double letter Kaph it inherits Kaph's Sefer Yetzirah associations (the planet Jupiter in the Golden Dawn overlay) rather than carrying an independent one.

The five final forms are a detail the Sefer Yetzirah itself is silent on: the text as it survives knows twenty-two letters, three mothers, seven doubles and twelve simples, and says nothing about separate word-final shapes, so Final Kaph's classification is inherited wholesale from Kaph rather than being the text's own assignment. That base text is itself hard to date: Gershom Scholem placed its composition somewhere between the second and sixth century CE, and it survives in three recensions that disagree with each other in detail. The Hebrew script carrying these letterforms is not the script of the earliest Hebrew inscriptions either; it develops the Aramaic chancery hand of the Achaemenid Persian empire, adopted after the Babylonian exile and standard by the Hasmonean period, displacing the older palaeo-Hebrew script, which survives afterward mainly on coins. The letter names are Northwest Semitic words inherited from that older script; their familiar pictographic glosses are modern reconstructions, and the names travelled into Greek unchanged in sound but empty of meaning.

The Talmud, at Shabbat 104a, preserves a specific rabbinic debate about the authority behind Final Kaph and the four other sofit letters as a group: it records the statement mem, nun, tzadi, pe, kaph, tzofim amaram, the prophets said them, meaning tradition credited early prophetic figures with fixing which five letters take a distinct shape at the end of a word, against a rival view that the forms were only formally confirmed later, by the men of the Great Assembly in the early Second Temple period. The Talmud does not fully resolve which account is correct, treating the final forms as halacha le-Moshe mi-Sinai in some readings, a law transmitted to Moses at Sinai without a documented origin story, rather than a script decision made at any single datable moment.

Final Kaph's own shape, a single stroke descending well below the writing line, is visually one of the more distinctive of the five, though beginning readers and, occasionally, careless scribes have been known to confuse it with final Nun, a plainer descending stroke, or with the ordinary letter Vav, making correct proportion here as important as the debate over the form's origin is unresolved. In the extended gematria system known as mispar gadol, discussed elsewhere in this atlas, Final Kaph carries the value 500, continuing the numeral sequence beyond the point where the ordinary twenty-two-letter count stops at 400 with Tav.