Accordingly, a group of prophets, disciples of the older masters, and inspired by the spirit of reform, devoted themselves to this all-important task. The results of their work are represented by the prophetic law-book of Deuteronomy. Through its pages glow the new ethical teachings of the prophets of the Assyrian period. The elements of Hosea's doctrine, love to God and love to men and kindness to the needy and oppressed, in their new setting and application, make it one of the evangels of the Old Testament. Its lofty standards of justice and social responsibility reflect the impassioned addresses of Amos and Hosea. Since the new laws, as a whole, represented the practical application of the messages of the prophets to life, they were justly and appropriately placed in the mouth of Moses, the real and traditional head of the nation and of the prophetic order. [Sidenote: _Relation to the older laws_] A comparison of this prophetic law-book with the older primitive laws shows that the latter were made the basis of the new codes, since most of them, in revised form, are also found in Deuteronomy. The prophetic lawmakers, however, in the same spirit that actuated Jesus in his attitude toward the ancient law, freely modified, supplemented, and in some cases substituted for the primitive enactments, laws that more perfectly embodied the later revelation. [Sidenote: _Promulgation and date of the prophetic codes_] The nature of the reforms instituted by Josiah, according to II Kings xxii., clearly prove that the laws which inspired them were those of Deuteronomy, and that this was the law-book discovered in the temple by Hilkiah the priest and publicly read and promulgated by the king in 621 B.C. Originally it was probably prepared by the prophetic reformers as a basis for their work; but it incorporates not only most of the primitive codes, but also many other ancient laws and groups of laws, some doubtless coming from the earliest periods of Israel's history. It also appears to have been further supplemented after the reformation of Josiah. In general it represents the second great stage in Old Testament law, as it rapidly developed between 800 and 600 B.C. under the inspiring preaching of the remarkable prophets of the Assyrian period. [Sidenote: _Their historical and permanent value_]