(7) The Great Synagogue, whose establishment, after the return from Babylonian captivity, tradition attributes to Ezra the Scribe, consisted of 120 men, who comprised the highest judicial tribunal, and who occupied a position in the early days of the Temple similar to that of the later _Sanhedrin_. The historical foundation of this tradition is Nehemiah VIII-X, in which is recounted the solemn acceptance of the Law by a great assembly of the people. The men of the Great Synagogue appear here in _Abot_ as the depositaries of the tradition of the _Torah_, coming in the chain between the last prophets and the earliest scribes. From this chapter and other Rabbinical sources, we gather that the men of the Great Synagogue constituted a sort of college of teachers, one of the last survivors being Simon, the Just (Chapter I, 2). Their work was to interpret, teach, and develop the _Torah_, and to them were ascribed all kinds of legal enactments. They instituted the _Shemoneh Esrah_ (the Eighteen Benedictions) and other prayers, and cast the entire ritual into definite shape. They admitted _Proverbs_, the _Song of Songs_, and _Ecclesiastes_ into the Old Testament canon. A number of modern scholars, notably Kuenen, are of the opinion that this body never existed in the form represented by Jewish tradition (see Schurer, _History_, I, ii, pp. 354-355). On the controversy regarding the existence of the Great Synagogue see Schechter, _Studies_, II, 105-106. Consult Taylor, _ibid._, pp. 110-111; Graetz, _History of the Jews_, vol. I, p. 381, 394, vol. II, p. 19. For further bibliography, see Strack, _Spruche_, p. 11. See especially Herford, _Pharisaism_. pp. 18-28. (8) Take measures to prevent the breaking of any of the divine precepts. Thereby, certain things which are in themselves lawful are prohibited in order to enforce the observance of things the doing of which is unlawful. Compare Leviticus XVIII, 30, "make a _mishmeret_ to my _mishmeret_" (_Yabamot_, 21a), and _Abot_, III, 17, "the _Massorah_ is a fence to the _Torah_." 2. Simon, the Just (9), was of the last survivors of the Great Synagogue. He used to say, "Upon three things the world rests: upon the _Torah_, upon the Temple service (10), and upon the doing of acts of kindness" (11). (9) Simon, the Just, son of Onias, was high-priest about 300 B.C.E. See Josephus, _Antiquities_, XII, ii, 5. Consult Sammter, _Mischnaioth Ordnung Zeraim_ (Berlin, 1887), _Introduction_, pp. 10-22; Meilziner, _Introduction to the Talmud_, pp. 22-39; the _Jewish Encyclopedia_, and Strack, _Einleitung_, p. 82 _et seq._, for the lives of the authorities mentioned in _Abot_ and for bibliographies.