Herodotus 2.78 (on the Egyptians, tr. G.C. Macaulay):
In the entertainments of the rich among them, when they have finished eating, a man bears round a wooden figure of a dead body in a coffin, made as like the reality as may be both by painting and carving, and measuring about a cubit or two cubits each way; and this he shows to each of those who are drinking together, saying: "When thou lookest upon this, drink and be merry, for thou shalt be such as this when thou art dead." Thus they do at their carousals.