In 1924, Professor Sperber graduated from Bonn University with a dissertation on "Das Propheten-Targum in seinem Verhältnis zum masoretischen Text". He was then invited to prepare a critical edition of the Targum. Thus Professor Sperber began an immense task. The Bible in Aramaic is the fruit of more than forty years of study, during which he made innumerable trips to various countries in order to visit libraries and examine manuscripts. The first part of the Bible in Aramaic appeared in 1959. Needless to say that this work is indispensable for students of the Old Testament. Let the reviews that have accumulated over the years speak for themselves.