Exodus 7:9

כִּי֩ יְדַבֵּ֨ר אֲלֵכֶ֤ם פַּרְעֹה֙ לֵאמֹ֔ר תְּנ֥וּ לָכֶ֖ם מוֹפֵ֑ת וְאָמַרְתָּ֣ אֶֽל־אַהֲרֹ֗ן קַ֧ח אֶֽת־מַטְּךָ֛ וְהַשְׁלֵ֥ךְ לִפְנֵֽי־פַרְעֹ֖ה יְהִ֥י לְתַנִּֽין׃

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

Greek text from Swete's edition, CC BY-SA 4.0

Si Faraón os respondiere diciendo, Mostrad milagro; dirás á Aarón: Toma tu vara, y échala delante de Faraón, para que se torne culebra.

“ When Pharaoh tells you, ‘ Perform a miracle,’ you are to say to Aaron, ‘ Take your staff and throw it down before Pharaoh,’ and it will become a serpent.”