 For this purpose he induced Antipope Benedict XIII, whose physician he was, to arrange the Disputation of Tortosa with learned Jews.Either before or after the debate Hieronymus, at the request of Pope Benedict XIII, wrote two articles in which he heaped up accusations against the Jews and repeated old, apparently slanderous charges.One of these articles was "Tractatus Contra Perfidiam Judæorum"; the other, "De Judæis Erroribus ex Talmuth"; they were published together as "Hebræomastix" (Zurich, 1552; Frankfurt am Main, 1602; Hamburg, n. d.), printed in the "Bibliotheca Magna Veterum Patrum", Lyons, vol.