Zohar abstract concepts that are never completely expressed. The earlier part of the Zohar, also known as "Zohar 'Al haTorah" (Zohar on the Torah, זוהר על התורה) or "Midrash Rashbi", contains several smaller "books", as described below. This book was published in three volumes: Volume 1 on "Bereishit" (Genesis), Volume 2 on "Shemot" (Exodus) and Volume 3 on "Vayikra, Bamidbar and Devarim" (Leviticus, Numbers, and Deuteronomy). At the start of the first volume is printed a "Preface to the Book of the Zohar" (pages 1a to 14b). After this introduction is the Zohar's commentary on most of the parashahs of the
August Dillmann ihrer politischen Wirksamkeit" (1868). In 1869 appeared his commentary on "Hiob", (4th edition 1891) which stamped him as one of the foremost Old Testament exegetes. His renown as a theologian was mainly founded on the series of commentaries, based on those of August Wilhelm Knobel's "Die Genesis" (Leipzig, 1875); "Die Bücher Exodus und Leviticus", 1880; "Die Bücher Numeri, Deuteronomium und Josua", with a dissertation on the origin of the Hexateuch, 1886; "Der Prophet Jesaja", 1890. In 1877 he published the "Ascension of Isaiah" in Ethiopian and Latin. He was also a contributor to Daniel Schenkel's "Bibellexikon", Brockhaus's "Conversationslexikon", and Johann