Purim
There is a tale in the Hasidic Chabad movement that supposedly Joseph Stalin died as a result of some metaphysical intervention of the seventh Chabad leader, Rabbi Menachem Mendel Schneerson, during the recitation of a discourse at a public Purim Farbrengen. Stalin was suddenly paralyzed on 1 March 1953, which corresponds to Purim 1953, and died 4 days later. Due to Stalin's death, nationwide pogroms against Jews throughout the Soviet Union were averted, as Stalin's infamous doctors' plot was halted.
Rise of Joseph Stalin
Stalin eventually turned on Yezhov. He appointed Yezhov Commissar of Water Transport in April 1938 (a similar thing had happened to Yezhov's predecessor, Yagoda, shortly before he was fired). Stalin began ordering the executions of Yezhov's protégés in the NKVD. Politburo members also started to openly condemn the excesses of the NKVD under Yezhov's leadership, all of which gave the signal that Yezhov was falling from Stalin's favour. Yezhov eventually suffered a nervous breakdown and resigned as NKVD chief on 23 November 1938. Yezhov was replaced as NKVD chief by Lavrentiy Beria. Yezhov was executed on 4 February 1940.