Deuteronomy is fairly described as a fresh codification of the ancient laws of Israel in the spirit of the Prophets of the Eighth Century. The Book is not only Law but Prophecy, in the proper sense of this word, and a prophetic interpretation of Israel’s history. It not only restates old and adds new laws but enforces the basal truths of the prophets, and in this enforcement breathes the ethical fervour of Amos and Isaiah as well as Hosea’s tenderness and his zeal for education. Deuteronomy has three cardinal doctrines: The One God, The One Altar, and The One People. _First_, The One God. Though slightly tinged with popular conceptions of the existence of other gods,(266) the monotheism of the Book is strenuously moral and warmly spiritual. The God of Israel is to be served and loved because He is Love—the One and Only God not more by His Righteousness and His Power than by His Grace, manifest as all three have been throughout His dealings with Israel. The worship of other gods is forbidden and so is every attempt to represent Himself in a material form. His ritual is purged of foolish, unclean and cruel elements. Witchcraft and necromancy are utterly condemned. _Second_—and this is original to Deuteronomy—The One Altar, at that time an inevitable corollary both to the need for purity in the worship of God and to the truth of His Unity. The long license of sacrifices at a multitude of shrines had resulted not only in the debasement of His worship, but in the popular confusion of Himself with a number of local deities.(267) The removal of the high-places, the concentration of sacrifice upon One Altar had, by the bitter experience of centuries, become a religious and an ethical necessity.