Webster's Revised Unabridged Dictionary · 1913

Yahwist

Yahwist , noun

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.

Also: Jehovist, Jahwist, Jahvist