As soon as peace was restored the representatives of the Babylonian Jews hastened to re-establish their institutions, to re-open the academies, and, as it were, to re-unite the severed links in the chain of tradition. The fugitive Giza, who had remained in hiding by the river Zab, was called to preside over the academy at Sora; the sister academy at Pumbeditha chose Semuna as its head. A third name of this period has been transmitted to posterity, that of Rabaï of Rob (near Nahardea), whose position and office are, however, not clearly known. These men, with their associates and disciples, devoted their whole activity to the Talmud. It was the sole object of the attention of all thoughtful and pious men of that period; it satisfied religious zeal, promoted tranquillity of mind, and was also the means of acquiring fame, and thus furthering both spiritual and temporal aims. The persecution of the Law endeared and sanctified it, and the Talmud was the sacred banner around which the entire nation rallied. But the disciples of the last Amoraïm had lost all creative power, and were unable to continue the development of the Talmud. The subject-matter and the method of teaching were both so fully defined that they were incapable of extension or of amplification. The stagnation in Talmudical development was more marked than ever before. The presidents of the academies were content to adhere to the ancient custom of assembling their disciples during the months of Adar (March) and Ellul (September), giving them lectures on the traditional lore and the methodology of the Talmud, and assigning to them themes for private study. At the utmost they settled, according to certain principles, many points of practice in the ritual, the civil law and the marriage code, which had until then remained undetermined, or concerning which there was a difference of opinion in the academies. Their purpose was to render the exhaustless material of the Talmud, which discussion and controversy had deprived of all definiteness, available for practical use. In order to prevent the decay of religious living, it was necessary that all doubt and uncertainty should cease; the judges stood in need of fixed principles by which to decide the cases brought before them, and all were ignorant of authoritative precepts by which to regulate their religious conduct. The establishing of the final rules for religious and legal practice after careful consideration of the arguments _pro_ and _con_ conferred upon the post-Amoraïc teachers the name of Sabureans (Saburaï). After the various opinions (Sebora) were reviewed, they were the ones that established the final, valid law. The activity of the Sabureans really began immediately after the completion of the Talmud, and Giza, Semuna and their associates merely worked along the same lines; their intention was to develop a practical code rather than the theory of the Law. They did not arrogate to themselves the authority to originate.