sentences:  He took an active part in the establishment of the Tempelverein, being one of the collaborators in the revision of its prayer-book; and he founded the Verein zur Beförderung Nützlicher Gewerbe unter den Juden, which he directed from 1823 to 1840, when he became secretary of the congregation of Hamburg.Possessing knowledge of Romance and Germanic languages, and writing with ease in Hebrew, he was an acute and clever critic.Forty of his songs and poems are contained in the hymn-book of the Hamburg congregation.