Ger, or Gur (or Gerrer when used as an adjective) is a Hasidic dynasty originating from Ger, the Yiddish name of Góra Kalwaria, a small town in Poland.
Prior to the Holocaust, Ger was the largest and most important Hasidic group in Poland. Today it is regarded as one of the largest Hasidic dynasties in the world, along with the Satmar dynasty. It is now based in Jerusalem and Bnei Brak. The Rebbes who lead the movement have the family name of Alter. The founder of this group was Rabbi Yitzchak Meir Alter (he changed his name from Rotenberg) (1798-1866), known as the Chiddushei HaRim after his primary scholarly work by that title.
After Rabbi Yitzchak Meir's death in 1866, his Hasidim wanted his eighteen-year old grandson, Rabbi Yehudah Aryeh Leib Alter, to succeed him. When Rabbi Yehuda Aryeh Leib refused to accept this position, most of the Hasidim became followers of the elderly Hasid, Rabbi Chanokh Heynekh HaKohen Levin, formerly rabbi of Prushnits and now retired to Alexander. After Rabbi Chanokh Heynekh died in 1870, Rabbi Yehudah Aryeh Leib (who became known as the Sfas Emes) acceded to the request of the Hasidim to become their next rebbe. Despite his youth, he was quickly accepted amongst the rebbes of Poland as one of their own.
The Gerrer movement flourished under the leadership of Rabbi Yehudah Aryeh Leib and his eldest son and successor, Rabbi Avraham Mordechai Alter (known as the Imrei Emes). In 1926, in a bold departure for Polish Hasidim, Rabbi Avraham Mordechai established a yeshiva in Jerusalem, naming it for his father, the Sfas Emes. The first rosh yeshiva was Rabbi Nechemiah Alter, a brother of the Imrei Emes. Today the yeshiva remains the flagship of the Gerrer yeshivas. A branch was set up in Tel Aviv, later to be called Yeshivat Chiddushei HaRim.
Almost all Gerrer Hasidim living in pre-war Europe (approximately 200,000 Hasidim) perished during the Holocaust. Rabbi Avraham Mordechai Alter, who managed to escape, set about the task of rebuilding the movement in the British Mandate of Palestine.
Under its post-war leaders, the movement began to flourish again. Presently, on major occasions such as Shavuos, 12,000 Hasidim may gather in the main Gerrer beth midrash.
Large communities of Gerrer Hasidim exist in Ashdod, Bnei Brak, Jerusalem, and Tel Aviv, Israel, as well as in New York, London, and Antwerp. Several satellite communities have also been established in small towns in Israel, such as Arad in the Negev desert, Hatzor HaGlilit in the Galilee, Beit Shemesh and Kiryat Gat. Ger maintains a well-developed educational network of Talmud Torahs, yeshivas, and kollels, as well as Beis Yaakov schools for girls. Its leaders dominate the Agudat Israel religious movement and political party in Israel.
The men are distinguished by their dark Hasidic garb, and by their pants tucked into their socks called hoyzn-zokn (not to be confused with the breeches, called halber-hoyzn, worn by some other Hasidic groups). They wear a round felt hat, and a high, almost-pointed kapel. On Shabbos and Jewish holidays, married men wear the high circular shtraml (fur hat) of the Polish Hasidim, sometimes called a spodik (not to be confused with the much flatter shtreimel a fur hat worn by married men in most other Hasidic groups).
Ger follows the way of the Kotzker Rebbe in stressing service of God in a sharp and objective way, as opposed to the mystical and spiritual orientation of other Hasidic groups. Ger also places much emphasis on Talmud study. During both Friday-night and Shabbos morning services, worshippers take a break — usually one hour long — which is devoted to Torah study.
Under the leadership of the fifth Gerrer Rebbe, Rabbi Yisrael Alter (known as the Beis Yisrael), Ichud Mosdos Gur (Union of Gerrer Institutions) was established as the responsible body for funding all the educational institutions within the orbit of Ger in Israel. The Ichud is currently responsible for funding about 100 such institutions.
He left a great impression on many people from all walks of life, and was highly respected in all Haredi circles. His ideal was to elevate every person to somehow become one level higher than his present state. There are countless stories from individuals (Hasidim and non-Hasidim) who met the Rebbe, which relate how he had a tremendous spiritual impact on them and how this strong impression will never leave them. What makes this even more impressive is that many of these encounters with the Rebbe were for a very short period of time.