Rolf Rendtorff subjects, but was notable chiefly for his 1977 book, "Das überlieferungsgeschichtliche Problem des Pentateuch" ("The Problem of the Transmission of the Pentateuch"). The book was a study of the question of Pentateuchal origins (the question of how the first five books of the bible – Genesis, Exodus, Leviticus, Book of Numbers and Deuteronomy – came to be written), and appeared at the same time as two other important books, John Van Seters' "Abraham in History and Tradition" (1975), and Hans Heinrich Schmid's "Der sogenannte Jahwist" ("The So-called Yahwist") (1976). The three studies, appearing almost together, inaugurated a heated discussion in
Leviticus 19 (26-36) and a general instruction to obey all of God's commands (37). The laws of Leviticus 19 are put in no obvious order, and as a result scholars tend to think that the chapter includes a collection of regulations from various sources. The practice of leaving a portion of crops in the field for poor people or foreigners to use, mentioned in verses 9 and 10, reappears in the second chapter of the book of Ruth. In Judaism, the whole chapter is part of the weekly Torah portion (parashah) "Kedoshim" () which comprises Leviticus 19:1-20:27. Leviticus 19 Leviticus 19 is