Yahwist (?), n. Also Jahvist (&unr_;), Jahwist, older Jehovist. The author of the passages of the Old Testament, esp. those of the Hexateuch, in which God is styled Yahweh, or Jehovah; the author of the Yahwistic, or Jehovistic, Prophetic Document (J); also, the document itself.[Webster 1913 Suppl.]