Caligula's campaign into Germany was stopped by a conspiracy led by Cassius Chaerea.
Caligula orders that a statue of himself be placed in the temple in Jerusalem. The governor of Syria, Publius Petronius, who is responsible for erecting the statue, faces mass demonstrations by Jews of the region and manages to delay construction of the statue until the death of Caligula (January 24 41).
Philo leads a Jewish delegation to Rome to protest the anti-Jewish conditions in Alexandria.