The Sefer Hizzuq ‘Emunah (rendered in English as ‘Strengthening of the Faith’) has been one
of the best-known Jewish polemical works and has influenced eminent thinkers and philosophers as
Pierre Bayle, Jacques Basnage, Anthony Collins, Voltaire, Hermann Samuel Reimarus and others.
The work was written at the end of the XVIth century in the Polish-Lithuanian Commonwealth, by
the Karaite apologetical writer Isaac ben Abraham Troki. This text present a representation of Jesus
based on the analysis of the Gospels and the New Testament by a particular Jewish prospective. The
exegetical and historical method of the author concerns some central Christian issues, that also affects
the Jewishness of Jesus. The aim of the paper is meant to present some aspects of the ‘Historical
Jesus’ that comes out from Sefer Hizzuq ‘Emunah, his relation to the rise of historical consciousness
and to the previous Jesus’ representations of the Jewish polemical literature in the Middle-Ages.