Source criticism, in biblical criticism, refers to the attempt to establish the sources used by the authors and redactors of a biblical text.
It originated in the 18th century with the work of Jean Astruc, who adapted the methods already developed for investigating the texts of classical antiquity (in particular, Homer's Iliad) to his own investigation into the sources of the Book of Genesis. It was subsequently considerably developed by German scholars in what was known as "the higher criticism", a term no longer in widespread use. The ultimate aim of these scholars was to reconstruct the history of the biblical text and also the religious history of ancient Israel.
In general, the closer a source is to the event which it purports to describe, the more one can trust it to give an accurate description of what really happened. In the Bible where a variety of earlier sources have been quoted, the historian seeks to identify and date those sources used by biblical writers as the first step in evaluating their historical reliability.
Source criticism (or information evaluation) is the process of evaluating an information source, i.e. a document, a person, a speech, a fingerprint, a photo, an observation or anything used in order to obtain knowledge. In relation to a given purpose, a given information source may be more or less valid, reliable or relevant. Broadly, "source criticism" is the interdisciplinary study of how information sources are evaluated for given tasks (cf. next sections).
Problems in translation: The Danish word “kildekritik” like the Norwegian word “kildekritikk” and the Swedish word “källkritik” derived from the German “Quellenkritik” and is closely associated with the German historian Leopold von Ranke (1795–1886). Hardtwig writes: "His [Ranke's] first work Geschichte der romanischen und germanischen Völker von 1494–1514 (History of the Latin and Teutonic Nations from 1494 to 1514) (1824) was a great success. It already showed some of the basic characteristics of his conception of Europe, and was of historiographical importance particularly because Ranke made an exemplary critical analysis of his sources in a separate volume, Zur Kritik neuerer Geschichtsschreiber (On the Critical Methods of Recent Historians). In this work he raised the method of textual criticism used in the late eighteenth century, particularly in classical philology to the standard method of scientific historical writing" (Hardtwig, 2001, p. 12739).