During the Purim festival, the Book of Esther is read in the commemoration of the saving of the Jewish people from Haman (considered to be an Amalekite) who leads a plot to kill the Jews. On the basis of Exodus 17:14, where the Lord promised to "blot out the name" of Amalek, it is customary for the audience to make noise and shout whenever "Haman" is mentioned, in order to desecrate his name. It is customary to recite Deuteronomy 25:17–18 (see below) on the Shabbat before Purim.