Revival of the Hebrew language well-recognized sources, chiefly the Tanakh (especially those portions used liturgically like the Torah, Haftarot, Megilot, and the Book of Psalms) and the Mishnah. Apart from these, Hebrew was known through hymns, prayers, midrashim, and the like. During the Middle Ages, Hebrew continued in use as a written language in Rabbinical literature, including in judgments of Halakha, Responsa, and books of meditation. In most cases, certainly in the base of Hebrew's revival, 18th- and 19th-century Europe, the use of Hebrew was not at all natural, but heavy in flowery language and quotations, non-grammatical forms, and mixing-in of other languages, especially Aramaic.
Leiden Jerusalem Talmud Talmud the Leiden Talmud was lost for around three hundred years. It was only to be rediscovered in the mid nineteenth century in the Library of the city of Leiden. It had been entrusted to the Library by the notable Protestant scholar Joseph Scaliger who was a professor at Leiden. The Leiden Talmud was transferred to the University of Leiden Library along with the rest of Scaliger's collection of manuscripts. Recently the Academy of Hebrew Language published an exact transcription of the Leiden Talmud along with carefully annotated corrections. In 1973 the manuscript was restored and rebound. Leiden Jerusalem Talmud