Raphael Cohen, of Hamburg, a man of hasty temper, was the most zealous agitator against the German version of the Bible. But as Mendelssohn had relatives on his wife's side in this town, and also many admirers, no action could be taken against him there or in Prague, where there were freethinkers among the Jews. Fürth, therefore, was looked upon as the fittest place whence the interdict (about June, 1779) against "the German Pentateuch of Moses of Dessau" should be launched. All true to Judaism were forbidden, under penalty of excommunication, to use this translation.
Meanwhile the conflict between the old and the new Judaism was conducted with calmness, and no violent symptoms showed themselves. If Jacob Emden had been alive, the contest would have raged more fiercely, and evoked more disturbance. Mendelssohn was too unselfish, too gentle and philosophically tranquil to grow excited on hearing of the ban against his undertaking, or to solicit the aid of his Christian friends of high rank in silencing his opponents. He was prepared for opposition. "As soon as I yielded to Dubno to have my translation printed, I placed my soul in my hands, raised my eyes to the mountains, and gave my back to the smiters." He regarded the play of human passions and excessive ardor for religion as natural phenomena, which demanded quiet observation. He did not wish to disturb this peaceful observation by external influence, by threats and prohibitions, or by the interference of the temporal power. "Perhaps a little excitement serves the best interests of the enterprise nearest to my heart." He suggested that if his version had been received without opposition, its superfluity would have been proved. "The more the so-called wise men of the day object to it, the more necessary it is. At first, I only intended it for ordinary people, but now I find that it is much more needful for rabbis." On the part of his opponents, however, no decided efforts were made to suppress his translation, which appeared to them so dangerous, or to denounce its author. Only in certain Polish towns, such as Posen and Lissa, it was forbidden, and it is said to have been publicly committed to the flames. Violent action was to be feared only from the indiscreet, resolute Rabbi Raphael Cohen. He seems, however, to have delayed action until the whole appeared, in order to obtain proofs of deserved condemnation. Mendelssohn, therefore, sought help to counteract his zeal. He prevailed upon his friend, Augustus von Hennigs, Danish state councilor and brother-in-law of his intimate friend, Eliza Reimarus, to try to induce the king of Denmark and certain courtiers to become subscribers to the work; this would quench the ardor of the zealot. Hennigs, a man of hasty action, forthwith turned to the Danish minister, Von Guldberg, to fulfill the request of Mendelssohn. To his astonishment and Mendelssohn's, he received an insulting reply, to the effect that the king and his illustrious brothers were prepared to subscribe if the minister could assure them that the translation contained nothing against the inspiration and truth of the Holy Scriptures, so that the Jews might not afterwards say "that Moses Mendelssohn was an adherent to the (ill-famed) religion of Berlin."