Lucian, Lover of Lies 26
A slightly spooky one for Halloween. The speaker is a doctor by the name of Antigonus.
ἐγὼ γὰρ οἶδά τινα μετὰ εἰκοστὴν ἡμέραν ἧς ἐτάφη ἀναστάντα, θεραπεύσας καὶ πρὸ τοῦ θανάτου καὶ ἐπεὶ ἀνέστη τὸν ἄνθρωπον.
I know of a man who came to life twenty days after he was buried; I was his doctor both before his death and after he came back to life.