"Strangers!" he thundered out, "now who are you?
Where did you sail from, over the running sea-lanes?
Out on a trading spree or roving the waves like pirates,
sea-wolves raiding at will, who risk their lives
to plunder other men?"

– Homer

The Odyssey, Book 9, lines 284-288. Polyphemus confronts Odysseus and his men over invading his cave and stealing his food. In a simile he compares them to pirates roving the seas and bent on plunder. He warns that they are risking their lives taking what belongs to him. This is foreshadowing that some of them will pay for this with their lives.