The Odyssey: Book Twenty-Three

Eurykleia tells Penelope her husband's back
And has killed the suitors in a furious attack
She is highly sceptical and doesn't think it's true
"This is just the kind of trick the gods are known to do!"
She goes to Odysseus but still remains unsure
Orders that his bed be brought and set upon the floor
"What?" he says "My bed? I don't think that it can be moved
I made it from an olive tree that grows there" - thus he's proved
He really is Odysseus - now no more need be said
After twenty years apart, he takes his wife to bed.