sentences:  He afterward established himself as a merchant in Gnesen (Gniezno), near Posen (Poznań), whence, at about the age of forty, he was called to the rabbinate of Pinne (Pniewy), in the province of Posen.Later he became rabbi of Fordon, in the same province, and twenty years after his first call he became rabbi of the progressive and Germanized community of Wloclawek, where he remained until his death.He was one of the first truly Orthodox rabbis in Russia to acquire a correct knowledge of German and to deliver sermons in that language.