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.
Revival of the Hebrew language or Yishuv grew, the immigrants arriving from the diaspora did not speak Hebrew as a mother tongue, and learned it as a second language either prior to their immigration or in Palestine, while their children picked up Hebrew as their native language. At this time, the use of Hebrew as the "lingua franca" of the Yishuv was already a" fait accompli", and the revival process was no longer a process of creation, but a process of expansion. In Tel Aviv, the Legion of the Defenders of the Language was established, which worked to enforce Hebrew use. Jews who were overheard