This paper examines a Judeo-Greek glossary including names and epithets for God found in ff. 1-8 of the manuscript MS Vat. ebr. 423, offering a sample of the edition and commentary that are currently being prepared by the author. The discussion of the text is preceded by a general introduction to the Judeo-Greek language, its literature and their characteristics, with a special emphasis on the biblical and medieval components of this tradition. A closer look at the text of MS Vat. ebr. 423 shows that it can be placed within a wider context of medieval and early modern biblical Judeo-Greek glossaries, while still being unique in its composition, given that it is the only alphabetically ordered, thematical glossary within the medieval and early modern Judeo-Greek tradition.