The volume hereby presented to the reader was written and published in response to those missionary chieftains of the city of Cincinnati who took a vulgar renegade from Judaism by his hand, and appointed him a missionary to the Jews; and, notwithstanding the man's illiteracy, furnished him with a pulpit, and invited the Jews week after week by pompous advertisements in the public press and handbills freely distributed in the streets, to come and hear that renegade. The author, considering that uncalled-for action of church dignitaries an insult to Judaism, felt it his duty to resent it, and so he did. Here is an answer to the main question, why the Israelite can not embrace Christianity. Quite a number of books exists, in which the relative points are discussed, although the author recollects none written from his standpoint of universal brotherhood, universal salvation and universal religion, moral freedom, political equality and the supremacy of reason, with the highest respect for Judaism, Christianity, the Islam and every other religion in harmony with the postulate of reason and the standard of conscience. - Preface.