LXX Gen 19:33

ἐπότισαν δὲ τὸν πατέρα αὐτῶν οἶνον ἐν τῇ νυκτὶ ταύτῃ, καὶ εἰσελθοῦσα ἡ πρεσβυτέρα ἐκοιμήθη μετὰ τοῦ πατρὸς αὐτῆς τὴν νύκτα ἐκείνην· καὶ οὐκ ᾔδει ἐν τῷ κοιμηθῆναι αὐτὴν καὶ ἀναστῆναι.

So that night they got their father drunk with wine, and the firstborn went in and slept with her father; he was not aware when she lay down or when she got up.