Joseph Rosen was born in
Rogachov, now
Belarus, into a
Hasidic family of
Chabad-
Kapust Hasidim, and was educated in the local
cheder (elementary school). His unusual capabilities were noticed at the age of 13, when he was sent to study in
Slutsk along with
Chaim Soloveitchik (5 years his senior), under
Yosef Dov Soloveitchik (Beis Halevi). He subsequently studied under
Yehoshua Leib Diskin (Maharil Diskin) in
Shklov. In 1889, he assumed the rabbinate of the Hasidic community in
Dvinsk for almost 50 years, where his
non-Hasidic counterpart was
Meir Simcha of Dvinsk. They served in parallel until the late 1920s, and enjoyed excellent relations. Among those who received
semikha (rabbinic ordination) from him were
Menachem Mendel Schneerson (the seventh Lubavitcher Rebbe, 1902–1994), Mordecai Savitsky (1911–1991) of
Boston, Zvi Olshwang (1873–1961) of
Chicago (brother-in-law of
Shimon Shkop) and Avraham Eliyahu Plotkin (1888–1948; author of
Birurei Halachot—a copy of the actual
semikha is included in that work). Rosen is remembered for his breadth of Torah knowledge and caustic wit. He did not suffer inadequacy lightly. He was similarly reputed to rarely quote any rabbinic authority post-
Maimonides, and avoided recent rabbinic works of the
Acharonim in favour of the
Rishonim (those preceding the late 15th century). His responses to queries of Jewish law are considered enigmatic and cryptic. Rosen died in
Vienna in 1936 at the Vienna Sanitorium and his body was sent to Dvinsk for burial. Throughout his life he maintained very close connections to
Chabad-Lubavitcher Hasidim and their rebbes
Sholom Dovber Schneersohn and
Yosef Yitzchak Schneersohn. After Sholom Dovber's death, he supported the decision to appoint the young Yosef Yitzchak as the new Rebbe. Rosen is a famous figure in Chabad-Lubavitch folklore. His name often comes up in stories told in yeshivas and during
farbrengens (Hasidic gatherings). Stories range from self-sacrifice and dedication to
Torah values despite the pressures of the Russian government, to special sensitivity to the
Chassidus, to his genius in the revealed Torah. ==Scholarship==