A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
ezr 0:0EZRA was, along with Nehemiah, reckoned one book by the ancient Jews, who called them the First and Second Books of Ezra, and they are still designated by Roman Catholic writers the First and Second Books of Esdras. This book naturally divides itself into two parts or sections, the one contained in the first six chapters, and which relates the circumstances connected with the return of the first detachment of Babylonish exiles under Zerubbabel with the consequent rebuilding of the temple and the re-establishment of the divine service. The other part, embraced in the four concluding chapters, narrates the journey of a second caravan of returning captives under the conduct of Ezra himself, who was invested with powers to restore, in all its splendor, the entire system of the Jewish ritual. The general opinion of the Church in every succeeding age has been that Ezra was the author of this book. The chief objection is founded on Ezr 5:4, where the words, "Then said we unto them after this manner, What are the names of the men that make this building?" have occasioned a surmise that the first portion of the book was not written by Ezra, who did not go to Jerusalem for many years after. But a little attention will show the futility of this objection, as the words in question did not refer to the writer, but were used by Tatnai and his associates [Ezr 5:3]. The style and unity of object in the book clearly prove it to have been the production of but one author. The canonical authority of this book is well established; but another under the name of Ezra is rejected as apocryphal.