LXX Gen 18:10

εἶρεν δέ Ἐπαναστρέφων ἥξω πρὸς σὲ κατὰ τὸν καιρὸν τοῦτον εἰς ὥρας, καὶ ἔξει υἱὸν Σάρρα ἡ γυνή σου. Σάρρα δὲ ἤκουσεν πρὸς τῇ θύρᾳ τῆς σκηνῆς, οὖσα ὄπισθεν αὐτοῦ.

Then the LORD said, “I will surely return to you at this time next year, and your wife Sarah will have a son!” Now Sarah was behind him, listening at the entrance to the tent.