The prophet-like character who warns Ishmael and Queequeg after they sign aboard the Pequod is Elijah.
Elijah is a mysterious stranger Ishmael encounters after the pair have committed themselves to Ahab’s ship. He asks whether they have considered the fate of their souls and delivers ominous hints about Captain Ahab, the voyage, and the crew’s likely destruction.
His name deliberately recalls the biblical prophet Elijah, who confronted kings and delivered warnings in the Hebrew Bible. Melville’s Elijah functions less like a conventional sailor than a prophetic messenger: his fragmented statements are difficult to interpret, yet later events make them seem uncannily accurate.
The warning is easy to confuse with Captain Ahab’s officers, especially Bildad and Peleg, who arrange the voyage, or with Gabriel, the religiously obsessed sailor aboard the Jeroboam. But Elijah appears before the Pequod departs and warns Ishmael and Queequeg directly. His prophecy establishes the novel’s atmosphere of fate and foreboding.