The Jewish community which Nehemiah found in Palestine was still living under the Deuteronomic law, and apparently knew nothing of the very different demands of the priestly codes. His reform measures recorded in Nehemiah v. and xiii., as well as his effective work in repairing the walls, prepared the way for the sweeping innovations which followed the public acceptance of the new law-book, brought according to tradition by Ezra. Five out of the eight regulations specified by the oath then taken by the leaders of the nation (Neh. x. 30-39) are found only in the priestly codes; one of them, indeed, is not presented elsewhere in the Old Testament. Henceforth the life of the Jewish race is moulded by these later codes. It is, therefore, safe to conclude that they constituted the essence of the new law-book solemnly adopted by the Jewish community as its guide somewhere about 400 B.C. [Sidenote: _Aim and characteristics of the priestly narratives_] Inasmuch as the interest of the priests centred in ceremonial institutions and the history of the law rather than about individuals and politics, it was natural that they also should write their own history of the race. Their general purpose was to give an introduction and setting to their laws. As might be anticipated, this priestly history incorporates the traditions of the late priestly school, and therefore those current long centuries after the events recorded transpired. As in the case of the prophetic narratives, the aim is not primarily historical, but doctrinal. The peculiar vocabulary, language, and theological conceptions are those which distinguish the post-exilic priestly editors of the latest Old Testament laws. [Sidenote: _Their sketch of the earlier history_] Their history begins with the majestic account of creation in Genesis i. 1 to ii. 4a. God does not form man from the dust, as in the primitive prophetic account, but by a simple word of command; and by progressive acts of creation he realizes his perfect plan, which culminates in the creation of mankind. The literary style is that of a legalist: formal, precise, repetitious, and generic. The ultimate aim of the narrative is to trace the origin of the institution of the Sabbath back to the creation. The genealogical history of Genesis v. connects this account of creation with the priestly version of the flood story which leads up to the covenant with Noah. The priestly genealogical histories of Genesis x. and xi. 10-27 trace the ancestry of the Hebrews through Abraham. Regarding this patriarch these later historians present only a brief sketch; in Genesis xvii., however, they expand their narrative to give in detail the origin of the rite of circumcision, which they associate with him. Jacob is to them chiefly of interest as the father of the ten tribes. [Sidenote: _from Egypt to Canaan_]