Under the mother-right, there was no written law. The relations were simple, and custom was held sacred. Under the new, and much more complicated order, written law was one of the most important requirements; and special organs became necessary to administer it. In the measure that the legal relations and legal conditions gained in intricacy, a special class of people gathered shape, who made the study of the law their special vocation, and who finally had a special interest in rendering the law ever more complicated. Then arose the men learned in the laws, the jurists, who, due to the importance of the statutory law to the whole of society, rose to influential social rank. The new system of rights found in the course of time its classic expression in the Roman State, whence the influence that Roman law exercises down to the present. The institution of the State is, accordingly, the necessary result of a social order, that, standing upon the higher plane of the subdivision of labor, is broken up into a large number of occupations, animated by different, frequently conflicting, interests, and hence has the oppression of the weaker for a consequence. This fact was recognized even by an Arabian tribe, the Nabateans, who, according to Diodorus, established the regulation not to sow, not to plant, to drink no wine, and to build no houses, but to live in tents, because if those things were done, _they could be easily compelled to obey by a superior power_ (the power of the State). Likewise among the Rachebites, the descendants of the father-in-law of Moses, there existed similar prescriptions.[17] Aye, the whole Mosaic system of laws is aimed at _preventing the Jews from moving out of an agricultural state, because otherwise, so the legislators feared, their democratic-communistic society would go under_. Hence the selection of the "Promised Land" in a region bounded, on one side, by a not very accessible mountain range, the Lebanon; on the other side, South and East, by but slightly fertile stretches of land, partly by deserts;--a region, accordingly, that rendered isolation possible. Hence came the keeping of the Jews away from the sea, which favored commerce, colonization and the accumulation of wealth; hence the rigid laws concerning seclusion from other peoples, the severe regulations against foreign marriages, the poor laws, the agrarian laws, the jubileum,--all of them provisions calculated to prevent the accumulation of great wealth by the individual. The Jewish people were to be kept in permanent disability ever to become the builders of a real State. Hence it happens that the tribal organization, which rested upon the gentile order, remained in force with them till its complete dissolution, and continues to affect them even now.