In this work, eagerly read by Christians, Leo Modena, like Ham, uncovered his father's nakedness, exposed the inner sanctuary of the Jews to prying and mocking eyes. To the uninitiated, that which within the Jewish circle was a matter for reverence could not but appear petty, silly, and absurd. Leo Modena explained what ceremonies and statutes Jews employ in connection with their dwellings, clothing, household furniture, up-rising and lying down, physical functions, and in the synagogues and schools. Involuntarily the author associated himself with the despisers of Judaism, which he as rabbi had practiced and taught. He showed that he was conscious of this: "While writing I in fact forgot that I am a Jew, and considered myself a simple, impartial narrator. However, I do not deny that I have taken pains to avoid ridicule on account of the numerous ceremonies, but I had no intention to defend and palliate, because I wished only to communicate, not convince." However, it would be an error to infer from this that Leo Modena had at heart completely broken with Rabbinical Judaism. He was, as has been stated, not a man of firm and lasting convictions. Almost at the same time when he exposed the rites of Judaism to the Christian public, he composed a defense of them and oral teaching in general against attacks from the Jewish side. A Hamburg Jew of Marrano descent had raised eleven points to show the falsehood of Talmudic tradition. Of these arguments some are important, others frivolous. The Hamburg sceptic laid chief stress on the point that Talmudic and Rabbinic ordinances are additions to Pentateuchal Judaism, and the Pentateuch had expressly forbidden additions of this sort. At the wish of certain Portuguese Jews, Leo Modena confuted these objections, raised by a sciolist. His confutation was a feeble performance, and contains nothing new. With Leo Modena one never knew whether he was earnest in his belief or his unbelief. As in youth he had brought forward reasons for and against games of chance, had finally condemned them, and nevertheless freely engaged in them, so he behaved with regard to Talmudical Judaism. He attacked it, defended it, made it appear ridiculous, and yet practiced it with a certain degree of honesty.