To find similar evidence of the practical adoption of the Priestly Code we have to come down to a much later period. It is not till the year 444 B.C., in the time of Ezra and Nehemiah, that we read of the people pledging themselves by a solemn covenant to the observance of regulations which are clearly those of the finished system of Pentateuchal law (Neh. viii.‐x.). It is there expressly stated that this law had not been observed in Israel up to that time (Neh. ix. 34), and in particular that the great Feast of Tabernacles had not been celebrated in accordance with the requirements of the law since the days of Joshua (Neh. viii. 17). This is quite conclusive as to actual practice in Israel; and the fact that the observance of the law was thus introduced by instalments and on occasions of epoch‐making importance in the history of the community raises a strong presumption against the hypothesis that the Pentateuch was an inseparable literary unity which must be known in its entirety where it was known at all.
Now the date of Ezekiel’s vision (572) lies between these two historic transactions—the inauguration of the law of Deuteronomy in 621, and that of the Priestly Code in 444; and in spite of the ideal character which belongs to the vision as a whole, it contains a system of legislation which admits of being compared point by point with the provisions of the other two codes on a variety of subjects common to all three. Some of the results of this comparison will appear as we proceed with the exposition of the chapters before us. But it will be convenient to state here the important conclusion to which a number of critics have been led by discussion of this question. It is held that Ezekiel’s legislation represents on the whole a transition from the law of Deuteronomy to the more complex system of the Priestly document. The three codes exhibit a regular progression, the determining factor of which is a growing sense of the importance of the Temple worship and of the necessity for a careful regulation of the acts which express the religious standing and privileges of the community. On such matters as the feasts, the sacrifices, the distinction between priests and Levites, the Temple dues, and the provision for the maintenance of ordinances, it is found that Ezekiel lays down enactments which go beyond those of Deuteronomy and anticipate a further development in the same direction in the Levitical legislation.(211) The legislation of Ezekiel is accordingly regarded as a first step towards the codification of the ritual laws which regulated the usage of the first Temple. It is not of material consequence to know how far these laws had been already committed to writing, or how far they had been transmitted by oral tradition. The important point is that down to the time of Ezekiel the great body of ritual law had been the possession of the priests, who communicated it to the people in the shape of particular decisions as occasion demanded. Even the book of Deuteronomy, except on one or two points, such as the law of leprosy and of clean and unclean animals, does not encroach on matters of ritual, which it was the special province of the priesthood to administer. But now that the time was drawing near when the Temple and its worship were to be the very centre of the religious life of the nation, it was necessary that the essential elements of the ceremonial law should be systematised and published in a form understood of the people. The last nine chapters of Ezekiel, then, contain the first draft of such a scheme, drawn from an ancient priestly tradition which in its origin went back to the time of Moses. It is true that this was not the precise form in which the law was destined to be put in practice in the post‐exilic community. But Ezekiel’s legislation served its purpose when it laid down clearly, with the authority of a prophet, the fundamental ideas that underlie the conception of ritual as an aid to spiritual religion. And these ideas were not lost sight of, though it was reserved for others, working under the impulse supplied by Ezekiel, to perfect the details of the system, and to adopt the principles of the vision to the actual circumstances of the second Temple. Through what subsequent stages the work was carried we can hardly hope to determine with exactitude; but it was finished in all essential respects before the great covenant of Ezra and Nehemiah in the year 444.(212)