sentences:  Luria taught that twelve gates of prayer exists, corresponding to the twelve tribes of ancient Israel (and to the twelve Jewish communities that existed in Safed in Luria's lifetime), and that twelve "nusachs" for Jewish prayer ("nasachot ha-tefillah") emanated accordingly.These 
  
  In alteration of this Lurianic concept, especially in 18th/19th-century Hasidic Judaism the claim emerged that, while in general one should keep to one's "minhag" of origin, the Nusach Sefard reached a believed "thirteenth gate" ("Shaar ha-Kollel") in Heaven for those who do not know their own tribe.