Ancient Hebrew writings the Tannaim (rabbis cited in the Mishnah), the spoken vernacular of Jews in Judaea was a late form of Hebrew known as Rabbinic or Mishnaic Hebrew, whereas during the period of the Amoraim (rabbis cited in the Gemara), which began around 200 CE, the spoken vernacular was Aramaic. Hebrew continued to be used for the writing of religious texts, poetry, and so forth. There are significant differences between the two Talmud compilations. The language of the Jerusalem Talmud is a Western Aramaic dialect, which differs from the form of Aramaic in the Babylonian Talmud. The Jerusalem Talmud is often fragmentary
Hebrew language world could correspond in a mutually intelligible language, and that books and legal documents published or written in any part of the world could be read by Jews in all other parts, but that an educated Jew could travel and converse with Jews in distant places, just as priests and other educated Christians could converse in Latin. For example, Rabbi Avraham Danzig wrote the "Chayei Adam" in Hebrew, as opposed to Yiddish, as a guide to "Halacha" for the ""average" 17-year-old" (Ibid. Introduction 1). Similarly, the Chofetz Chaim, Rabbi Yisrael Meir Kagan's purpose in writing the "Mishna Berurah" was to