Yet with regard to the dead, there is but one recourse for us—the praise and narration that transmit their glorious achievements to all posterity.Liddell-Scott-Jones, s.v. οἴχομαι, sense II.1:
πρὸς δὲ τοὺς οἰχομένους ἓν ἡμῖν ὑπάρχει μόνον, εὐφημίαι τε καὶ λόγοι τὰ πεπραγμένα μετ᾿ ἀρετῆς εἰς ἅπαντα παραπέμποντες τὸν χρόνον.
of persons, euphem. for θνῄσκω, to have departed, be gone hence.Related post: Remembering.