Rabban argues that Meshullam in fact signed his work not once but twice. Isaiah 49:7 contains God’s address to a figure called by the obscure phrase ‘eved moshelim, literally “servant of rulers.” Since Hebrew was originally written consonantally, without vowels, Rabban infers that ‘vd mshlym is a corruption of an original ‘avbdo meshullam (‘vdw mshlm), “his servant Meshullam.”