ἐπιστόλιον
From LSJ
Ἐν ἀρχῇ ἦν ὁ Λόγος, καὶ ὁ Λόγος ἦν πρὸς τὸν Θεόν, καὶ Θεὸς ἦν ὁ Λόγος (Κατὰ Ἰωάννην 1:1) → In the beginning was the Word, and the Word was with God, and the Word was God.
English (LSJ)
τό, Dim. of ἐπιστολή, Epicur.Fr.143, UPZ69.3,5 (ii B.C.), Plb.31.16.3, Plu.Ages.13, M.Ant.1.7, POxy.1481.3 (ii A.D.), etc.