Epiphanius mentions as Elkesai's brother a man called Jekseos (Koinē Greek: Iεξέος in Hæreses, xix. 1), and explains the brother's name as being derived from the Hebrew for "hidden power" and Elkesai as "the hidden God." Epiphanius records that the saints of the Elcesaites were two women: Martha ("mistress") and Marthana ("our mistress").