The most probable supposition is that the reformation of Hezekiah gave the first impulse to the legislation which afterwards appeared as Deuteronomy. But in the terrible reign of his son Manasseh, the efforts of the reformers met with violent and bloody opposition. Judah was under the iron heel of Assyria, and, to the average mind, this would prove the superiority of the Assyrian gods. Judah and her king, Manasseh, would seek in their desperation to win the favour of the Oriental pantheon, and this no doubt explains the idolatry and worship of the host of heaven which flourished during his reign even within the temple itself. It was just such a crisis as this that would call out the fierce condemnation of the idolatrous high places which characterizes Deuteronomy (cf. xii.) and create the imperative demand for such a control of the worship as was only possible by centralizing it at Jerusalem. During this period, too, such a book may very well have been hidden away in the temple by some sorrowing heart that hoped for better days. It is improbable in itself (cf. xviii. 6-8), and unjust to the narrative in 2 Kings xxii., xxiii., to suppose that the book was written by those who pretended to find it. It was really lost; had it been written during the earlier part of Josiah's reign, there was nothing to hinder its being published at once. In all probability, then, the book was in the main written and lost during the reign of Manasseh (_circa_ 660 B.C.). It has been observed that in some sections the 2nd pers. sing, is used. in others the pl., and that the tone of the plural passages is more aggressive than that of the singular; the contrast, e.g., between xii. 29-31 (thou) and xii. 1-12 (you) is unmistakable. We might, then, limit the conclusion reached above by saying that the passages in which a milder tone prevails probably came from Hezekiah's reign, and the more aggressive sections from Manasseh's. This date agrees with conclusions reached on other grounds concerning other parts of the Pentateuch. The prophetic narratives J and E were written in or before the eighth century B.C., the priestly code (P) is, broadly speaking, post-exilic.[1] Now if it can be proved that Deuteronomy knows JE and does not know P, the natural inference would be that it falls between the eighth and the sixth or fifth century. But this can easily be proved, for both in its narrative and legislative parts, Deuteronomy rests on JE. As an illustration of the former, cf. Deuteronomy xi. 6, where only Dathan and Abiram are the rebels, not Korah as in P (cf. Num. xvi, 12, 25); as an illustration of the latter, cf. the law of slavery in Exodus xxi. 2ff. with that in Deuteronomy xv. 12-18, which clearly rests upon the older law, but deliberately gives a humaner turn to it, extending its privileges, e.g., to the female slave. [Footnote 1: See below.]