In 1712 the Jesuit father Franz Kolb, teacher of Hebrew at the University of Prague, succeeded in having Bass and his son Joseph arrested, and their books confiscated. The innocent little book of devotions, Nathan Hannover's "Sha'are Zion" (Gates of Zion), which Bass reprinted after it had already gone through several editions, was transformed in the hands of the learned father into a blasphemous work directed against Christianity and Christians. Bass would have fared ill had not the censor Pohl, who had been commissioned to examine the contents of the books, been both faithful and competent. In consequence of his decision, Bass was released after ten weeks' imprisonment, at first on bail, and then absolutely. The last years of his life were devoted to the second edition of his bibliographic manual, which he intended to issue in enlarged and revised form. He died July 21, 1718 at Krotoschin without completing the work.