The Shem Tov Matthew (or Shem Tob's Matthew) consists of a complete text of Gospel of Matthew in the Hebrew language found interspersed among anti-Catholic commentary in the 12th volume of a polemical treatise "The Touchstone" (c.1380-85) by Shem Tov ben Isaac ben Shaprut (Ibn Shaprut), a Jewish physician living in Aragon, after whom the version is named. Shem Tov debated Cardinal Pedro de Luna (later Antipope Benedict XIII) on original sin and redemption in Pamplona, December 26, 1375, in the presence of bishops and learned theologians. Nine manuscripts of "The Touchstone" survive, though if an independent version of the text of Matthew used by Ibn Shaprut ever existed then it is lost.