Epiphanius, born (c. 315) in the vicinity of Eleutheropolis near Gaza, founded a monastery at Eleutheropolis and headed it for thirty years. He later (in 367) became bishop of Salamis on the island of Cyprus, but still kept in close touch with Palestine personally and through correspondance. In his Haereses (written in 374–377) he told much about the Jewish-Christian sects; in his De Mensuris et Ponderibus (“On Weights and Measures,” written in 392) he compiled a Bible dictionary dealing with the canon and versions of the Old Testament, measures and weights in the Bible, and the geography of Palestine.