With respect to the question of who Paul’s opponents were, there are three current answers: (i) some kind of Judaizers, (ii) some kind of Gnostics, or (iii) something like Georgi’s suggestion. The value of Georgi’s book lies in its rejection of the Gnostic hypothesis, and the collection of important textual reasons for believing that Paul’s opponents were (a) different from his opponents in 1 Cor., and (b) Jews, but not Judaizers, who were influenced by wisdom literature and Hellenistic syncretism. This book represents the English translation of a 1958 doctoral dissertation, revised and published in German in 1964. The published version has become the standard work on its subject. More than a translation, however, for from p. 333 on Prof. Georgi has written an Epilogue with five bibliographies, discussing some of the topics raised in the original book from a more modern perspective. Students will rightly turn to this book as a standard reference work.