Early years Meltzer was born in the city of
Mir in the
Russian Empire, to Baruch Peretz and Mirel, who were from the Hutner family. He was the youngest child of nine children who died in infancy and one surviving sister. At age ten,
Slobodka and Slutsk Yeshivas Following his marriage, Rabbi Meltzer was influenced by the
Musar movement, to which his father-in-law and brother-in-law were close, and to its leader Rabbi
Israel Salanter. He was a student of Rabbi
Nosson Tzvi Finkel, the
Alter of Slobodka, and was appointed as rosh yeshiva in Slobodka from 1894 to 1897, already at age 24. In 1897, the rabbi of Slutsk, Yaakov Dovid Willows (the
Ridbaz), established a local yeshiva that served as a 'branch' of
Slabodka Yeshiva, and Rabbi Meltzer was appointed to lead it. After the
Ridbaz moved to
Chicago in the
United States (and later to
Safed in
Land of Israel), Rabbi Meltzer was appointed as rabbi of Slutsk in 1903, and served in this position for twenty years. After the rise of the Soviet regime in the
Soviet Union, Rabbi Meltzer suffered persecution and was arrested several times. Because of this, he fled in 1923 to
Kletzk in
Poland, where he served as head of the exiled Slutsk Yeshiva - "Etz Chaim," together with his son-in-law, Rabbi
Aharon Kotler, and his close student and sister's son-in-law, Rabbi
Elazar Menachem Man Shach. During the Slutsk period, he initiated the printing of the rabbinical journal "Yagdil Torah", and also served as its editor.
Immigration to the land of Israel and final years In 1925, he was appointed as head of
Etz Chaim Yeshiva in
Jerusalem, and served in this position until his death. He lived in the Ohel Moshe neighborhood in what is now known as
Nachlaot in a building built and dedicated by the philanthropist Shraga Feivel Jacobson on a street that is now named after him (the adjacent building now houses the 'Lev Ha'ir' community center). According to Rabbi Berlin's will, his library was to be left to the next resident if he would be an outstanding
Torah scholar, and indeed the library was left to Rabbi Meltzer. After his passing, the library was transferred to Etz Chaim Yeshiva. Meltzer was a friend and admirer of
Abraham Isaac Kook, the chief rabbi of Israel and a self-avowed supporter of
Zionism. He was buried on
Har HaMenuchot. Streets were named after him in
Bnei Brak,
Jerusalem ('''Even Ha'Ezel Street''', after his book and his residential street - Ha'Ari) and in
Rehovot (
HaRa"z Street, an acronym for
Rabbi
Aiser
Zalman), where his son Rabbi Tzvi Yehuda Meltzer served as Chief Rabbi. The Even Ha'Ezel Yeshiva for young students was established in his name next to
Yeshivat HaNegev in
Netivot, and in 2015 the yeshiva moved to
Modi'in Illit. ==Public activity==