Deuteronomist
The Deuteronomist, abbreviated as either Dtr or simply D, may refer either to the source document underlying the core chapters (12–26) of the Book of Deuteronomy, or to the broader "school" that produced all of Deuteronomy as well as the Deuteronomistic history of Joshua, Judges, Samuel, Kings, and also the Book of Jeremiah. The adjectives "Deuteronomic" and "Deuteronomistic" are sometimes used interchangeably; if they are distinguished, then the first refers to the core of Deuteronomy and the second to all of Deuteronomy and the history.