As he approached, his father, Odysseus, rose
to yield his seat, but the son on his part
waved him back: "Stay where you are, stranger.
I know we can find another seat somewhere,
here on our farm, and here’s the man to fetch it."
– Homer
The Odyssey, Book 16, lines 47-51. As well as demonstrating how caring the unselfish Telemachus is for the less fortunate, this passage is an example of dramatic irony. Telemachus doesn’t recognize the "stranger" as his own father, but the audience knows.