LXX Gen 9:17

καὶ εἶπεν ὁ θεὸς τῷ Νῶε τοῦτο τὸ σημεῖον τῆς διαθήκης ἧς διεθέμην ἀνὰ μέσον ἐμοῦ καὶ ἀνὰ μέσον πάσης σαρκὸς ἥ ἐστιν ἐπὶ τῆς γῆς.

So God said to Noah, “This is the sign of the covenant that I have established between Me and every creature on the earth.”