The land of Israel, as is evident from the biblical narratives, played a significant role in the life and thought of the Israelites. It was the promised home, for the sake of which Abraham left his birthplace; the haven toward which those escaping from Egyptian servitude moved; and the hope of the exiles in Babylon. In the long centuries following the destruction of the Judean state by the Romans, it was a central part of messianic and eschatological expectations.

During the early period of settlement, there apparently were many sacred localities, with one or another functioning for a time as a central shrine for all the tribes. Even the establishment of Jerusalem as the political capital by David and the building of a royal chapel there by Solomon did not bring an end to local cult centres. It was not until the reign of Josiah of Judah (640–609 bce) that a reform centralized the cult in Jerusalem and attempted to end worship at local shrines. Although Josiah’s reform was not entirely successful, during the Babylonian Exile and the subsequent return, Jerusalem and its Temple defeated its rivals and became—in law, in fact, and in sentiment—the centre of Jewish cultic life. This did not inhibit, however, the rise and development of other forms of worship and even—on a few occasions—other cult centres. Nonetheless, no matter how unpopular the priesthood of the Jerusalem Temple became with some segments of the population—the Qumrān community seems to have denied its legality, and the Pharisees complained bitterly about its arrogance and exactions, attempting, when feasible, to impose and enforce Pharisaic regulations upon it—reverence for the Temple seems to have remained a widespread sentiment. With the destruction of the Temple by the Romans in 70 ce, such reverence was transformed both by messianic expectations and by eschatological hopes into fervent devotion, which, over the following centuries, became idealized and even supernaturalized. The most ardently articulated statement of the crucial role of the land of Israel and the Jerusalem Temple is found in the Sefer ha-Kuzari of Judah ha-Levi, in which the two are seen as absolutely indispensable for the proper relationship between God and his people.

Symbolizing the significance of the land and of the city is the practice of facing in their direction during worship. The earliest architectural evidence derived from synagogue remains in Galilee indicates that the attempt was made to arrange the building in such a way that the worshippers faced directly toward Jerusalem. This practice may have continued even in the Diaspora, but at a later date the present practice of setting the holy ark in or before the east wall was established, so that “facing Jerusalem” is now more symbolic than actual.

The sacred language: Hebrew and the vernacular tongues

The transformation of Hebrew into a sacred language is closely tied to the political fate of the people. In the period following the return from the Babylonian Exile, Aramaic, a cognate of Hebrew, functioned as the international or imperial language in official life and gained a foothold as a vernacular. It did not, despite claims made by some scholars, displace the everyday Hebrew of the people. The language of the Mishna, far from being a scholar’s dialect, seems to reflect popular speech, as did the Koine (common) Greek of the New Testament. Displacement of Hebrew—both in its literary form in Scriptures and in its popular usage—occurred in the Diaspora, however, as illustrated by the translation of Scriptures into Greek in some communities and into Aramaic in others. There seems also to have been an inclination on the part of some authorities to permit even the recitation of the Shema complex in the vernacular during the worship service. Struggles over these issues continued for a number of centuries in various places, but the development of formal literary Hebrew—a sacred tongue, to be used side by side with the Hebrew Scriptures in worship—brought them to an end. Although the communities of the Diaspora used the vernaculars of their environment in day-to-day living and even—as in the case of the communities of the Islamic world—for philosophical, theological, and other scholarly writings, Hebrew remained the standard in worship until modern times, when some western European reform movements sought partially—and a very small fraction even totally—to displace it.

The rabbinate

General councils or conferences

The nature of the Sanhedrin in the last years of the Jewish commonwealth is a much disputed matter. The several councils mentioned in Talmudic literature are equally difficult to define with any precision. References scattered throughout medieval literature suggest the existence of councils and synods, but their composition and authority are uncertain. About the year 1000 a synod was held in the Rhineland in which French and German communities participated under the guidance of Rabbenu Gershom, the leading rabbinic authority of the region. In the late Middle Ages, representatives from the communities of Great Poland, Little Poland, Russian Poland (Volhynia), and Lithuania came together to form the Waʿad Arbaʿ Aratzot (Council of the Four Lands). At the beginning of the modern era, Napoleon in 1806 summoned the Assembly of Notables—representatives of communities under French dominion—to deal with questions arising from the dissolution of the older status of the Jews and their naturalization as individuals into the new nation-states. Decisions of the assembly that involved questions of Jewish law were subsequently submitted to a Grand Sanhedrin called by Napoleon to provide Halakhic justification for acts that the French imperial government had required of the Jewish communities.

During the 19th century the demand for the reform of Jewish life—principally the liturgy of the synagogue but many other aspects as well—prompted a series of rabbinical conferences and synods. A similar course of events took place in the United States. In both instances, after an initial period in which radicals, moderates, and conservatives argued their respective cases in the same forum, polarization set in and intellectual differences were transformed into competing organizations. In the 1970s the several tendencies within the Jewish communities in North America were institutionalized in rabbinical conferences and congregational unions—Orthodox, Conservative, and Reform—whose influence was in large measure limited to their adherents. There is also a worldwide body of Reform or Liberal Judaism—the World Union for Progressive Judaism. One result of these developments was the hardening of denominational differences, particularly in North America, especially between Orthodox and non-Orthodox (Reform, Reconstructionist, Conservative) Judaisms.

Modern variations

The preceding sketch of basic practices and institutions has attempted to describe the so-called traditional situation, though it has been indicated that even here there are variations—actually more than have been noted. Reference has also been made to changes that represent the abandonment of traditional practices on the basis of intellectual decisions about the nature of Judaism, its beliefs, practices, and institutions. Such changes are far too numerous to describe in detail, but it is important to indicate their motivation. The Halakhic system, both as a whole and in all of its parts, is viewed not as divinely revealed but rather as a human process that seeks to expose in mutable forms the meaning of the divine-human encounter. The practices and institutions, therefore, are understood as historically determined, reflecting the multifaceted experience of the people of Israel as they have sought to live in the presence of God. Historical scholarship has disclosed the origins, rise, development, and decline of these structures in the past and thus suggests the propriety of changes in the present and future that appear to fulfill the needs of the community and its members. However, this kind of historicism (the explanation of values and forms in terms of their historical conditions) has been applied in widely different ways since it was first used in the 19th century. Some have seen it as justifying a disengagement from much if not all of the traditional pattern and a recognition that only the spiritual essence is of consequence for Judaism. Others have argued that the burden of proof is always upon those who would introduce changes. Since the end of World War II, the question has been whether a reconstituted Halakhic system might not be a requirement of the day.