Exodus 7:9

καὶ ἐὰν λαλήσῃ πρὸς ὑμᾶς Φαραὼ, λέγων, δότε ἡμῖν σημεῖον ἢ τέρας, καὶ ἐρεῖς Ἀαρὼν τῷ ἀδελφῷ σου, λάβε τὴν ῥάβδον, καὶ ῥίψον ἐπὶ τὴν γῆν ἐναντίον Φαραὼ, καὶ ἐναντίον τῶν θεραπόντων αὐτοῦ, καὶ ἔσται δράκων.