Of his works the more important are:--_Die Composition der Genesis kritisch untersucht_ (1823), an acute and able attempt to account for the use of the two names of God without recourse to the document-hypothesis; he was not himself, however, permanently convinced by it; _De metris carminum Arabicorum_ (1825); _Das Hohelied Salomo's übersetzt u. erklärt_ (1826; 3rd ed., 1866); _Kritische Grammatik der hebr. Sprache_ (1827)--this afterwards became the _Ausführliches Lehrbuch der hebr. Sprache_ (8th ed., 1870); and it was followed by the _Hebr. Sprachlehre für Anfänger_ (4th ed., 1874); _Über einige ältere Sanskritmetra_ (1827); _Liber Vakedii de Mesopotamiae expugnatae historia_ (1827); _Commentarius in Apocalypsin Johannis_ (1828); _Abhandlungen zur biblischen u. orientalischen Literatur_ (1832); _Grammatica critica linguae Arabicae_ (1831-1833); _Die poetischen Bücher des alten Bundes_ (1835-1837, 3rd ed., 1866-1867); _Die Propheten des alten Bundes_ (1840-1841, 2nd ed., 1867-1868); _Geschichte des Volkes Israël_ (1843-1859, 3rd ed., 1864-1868); _Alterthümer Israels_ (1848); _Die drei ersten Evangelien übersetzt u. erklärt_ (1850); _Über das äthiopische Buch Henoch_ (1854); _Die Sendschreiben des Apostels Paulus übersetzt u. erklärt_ (1857); _Die Johanneischen Schriften übersetzt u. erklärt_ (1861-1862); _Über das vierte Esrabuch_ (1863); _Sieben Sendschreiben des neuen Bundes_ (1870); _Das Sendschreiben an die Hebräer u. Jakobos' Rundschreiben_ (1870); _Die Lehre der Bibel von Gott, oder Theologie des alten u. neuen Bundes_ (1871-1875). The _Jahrbücher der biblischen Wissenschaft_ (1849-1865) were edited, and for the most part written, by him. He was the chief promoter of the _Zeitschrift für die Kunde des Morgenlandes_, begun in 1837; and he frequently contributed on various subjects to the _Götting. gelehrte Anzeigen_. He was also the author of many pamphlets of an occasional character.
The following have been translated into English:--_Hebrew Grammar_, by John Nicholson (from 2nd German edition) (London 1836); _Introductory Hebrew Grammar_ (from 3rd German edition) (London, 1870); _History of Israel_, 5 vols. (corresponding to vols. i.-iv. of the German), by Russell Martineau and J. Estlin Carpenter (London, 1867-1874); _Antiquities of Israel_, by H.S. Solly (London, 1876); _Commentary on the Prophets of the Old Testament_, by J. Frederick Smith (2 vols., London, 1876-1877); _Isaiah the Prophet_, chaps. i.-xxxiii., by O. Glover (London, 1869); _Life of Jesus Christ_, also by O. Glover (London, 1865).