Suspicions aroused by the facts that the Zohar was discovered by one person and that it refers to historical events of the post-Talmudic period while purporting to be from an earlier time, caused the authorship to be questioned from the outset. Joseph Jacobs and Isaac Broyde, in their article on the Zohar for the 1906 Jewish Encyclopedia, cite a story involving the Kabbalist Isaac of Acco, who is supposed to have heard directly from the widow of de León that her husband proclaimed authorship by Shimon bar Yochai for profit: