The Sanhedrin was the supreme judicial and legislative council of ancient Judea, composed of 71 members and presided over by the High Priest. It functioned as the highest religious, civil, and criminal court under Jewish law during the Second Temple period and, in a modified form, for some time after the Temple's destruction in 70 CE. The term derives from the Greek synedrion (“assembly” or “sitting together”). The Sanhedrin's authority extended over Jews throughout the Roman-governed Levant, though the precise scope of that authority - particularly in capital cases under Roman rule - remains a subject of historical and legal debate.

According to rabbinic sources, primarily the Mishnaic tractate Sanhedrin, the Great Sanhedrin consisted of 71 members drawn from the priestly aristocracy, elders, and scribes. A lesser Sanhedrin of 23 members handled capital cases at the local level. The body met in the Chamber of Hewn Stone (Lishkat HaGazit) within the Temple compound in Jerusalem. Its jurisdiction encompassed religious law (halakha), disputes between tribes, the appointment of kings and high priests, and criminal matters including capital offenses.

The extent to which the Sanhedrin could exercise independent capital jurisdiction under Roman rule is contested. Some scholars hold that Rome stripped the Sanhedrin of this authority around 30 CE; others argue the body retained it in matters of purely religious law. This question bears directly on the interpretation of the trial narratives in the New Testament Gospels. For a full treatment, see Sanhedrin Capital Jurisdiction - Debate.

After the destruction of the Second Temple in 70 CE, a reconstituted rabbinic council - sometimes also called Sanhedrin - operated in various locations in Roman Palestine, including Yavneh, Usha, and Tiberias. This later body focused primarily on preserving and developing Jewish law rather than on criminal jurisdiction. Rabbinic scholars generally place its dissolution in the early fifth century CE, following Roman suppression of the patriarchate.

The Sanhedrin held authority over the Jewish calendar, including the sanctification of the new month (Kiddush HaChodesh) based on eyewitness testimony of the new moon. This calendrical authority placed the Sanhedrin at the center of Jewish religious life and at the intersection of legal and astronomical reasoning. When the fixed calculated calendar replaced the testimony-based system, the underlying astronomical assumptions became a matter of legal and theological significance.

Knowledge of the Sanhedrin derives from several bodies of evidence that do not always agree. Rabbinic literature, especially the Mishnah and Talmud (compiled centuries after the period in question), provides the most detailed procedural account but reflects the ideals and retrospective concerns of the rabbinic movement. Josephus, writing in the late first century CE, describes the council in ways that partially align with and partially diverge from rabbinic accounts. The New Testament refers to the Sanhedrin in the context of the trials of Jesus and early Christian figures. Scholars debate the degree to which any of these sources accurately describes the institution as it functioned in practice.

There is broad scholarly agreement on the Sanhedrin's basic structure and function as described in rabbinic sources, and on the existence of a reconstituted rabbinic council after 70 CE. Contested areas include: the accuracy of rabbinic procedural accounts as descriptions of historical practice; the scope of the Sanhedrin's capital jurisdiction under Roman rule; and the degree to which Josephus and the New Testament trial narratives reflect the institution as it actually operated. These disputes are methodological as much as factual, turning on how much weight to assign sources compiled well after the events they describe.

• Rabbinic idealization - Some scholars argue that the Mishnaic account of the Sanhedrin reflects what the rabbis wished the institution had been rather than what it was. On this view, the detailed procedural rules in tractate Sanhedrin are normative and retrospective, not descriptive of actual Second Temple practice.
• Historical continuity - Others hold that rabbinic sources, while edited and idealized, preserve genuine institutional memory and should not be dismissed as wholesale invention. This view finds partial support in convergences between Josephus and the Mishnah on structural matters.
• Roman jurisdiction and the trial narratives - Whether the Sanhedrin retained capital jurisdiction under Roman rule is disputed. The answer shapes how scholars read the Gospel accounts of Jesus's trial. See Sanhedrin Capital Jurisdiction - Debate.

• Sanhedrin - History
• Sanhedrin - Debate
• Sanhedrin Capital Jurisdiction - Debate
• Jewish Law - Consensus
• Heliocentrism - Jewish Viewpoint
• Jewish Calendar
• Second Temple Period
• Trial of Jesus

1. Mishnah, tractate Sanhedrin, esp. 1:1-2:5, 4:1-5:5.
2. Schürer, Emil. The History of the Jewish People in the Age of Jesus Christ. Rev. ed. Edinburgh: T&T Clark, 1979. Vol. 2, pp. 199-226.
3. Josephus, Jewish Antiquities 20.9.1; Jewish War 2.15.6.
4. Sanders, E.P. Judaism: Practice and Belief, 63 BCE-66 CE. London: SCM Press, 1992. pp. 472-490.
5. Goodblatt, David. “The Monarchic Principle: Studies in Jewish Self-Government in Antiquity.” Texte und Studien zum Antiken Judentum 38. Tübingen: Mohr Siebeck, 1994.
6. Lauterbach, Jacob Z. “Sanhedrin.” Jewish Encyclopedia. 1906. Available at jewishencyclopedia.com.
7. Winter, Paul. On the Trial of Jesus. 2nd ed. Berlin: de Gruyter, 1974.