There are many instances of deception in William Shakespeare's play, The Tempest, and much of the play's theme revolves around restoration of the rightful order via gradual revelation of truth and reconciliation of opposing factions and individuals.
First deception: Ariel deceives the young prince Ferdinand, luring him further onto the island, and telling him that his father is dead.
Second: Ariel magically causes Alonso and Gonzalo to fall into a deep slumber. Antonio and Sebastian plot to kill Alonso and Gonzalo, but Ariel causes Gonzalo to wake up. Antonio and Sebastian deceive the King as to their intentions by claiming that they actually were defending him and themselves from wild animals.