Exodus 7:10

וַיָּבֹ֨א מֹשֶׁ֤ה וְאַהֲרֹן֙ אֶל־פַּרְעֹ֔ה וַיַּ֣עַשׂוּ כֵ֔ן כַּאֲשֶׁ֖ר צִוָּ֣ה יְהוָ֑ה וַיַּשְׁלֵ֨ךְ אַהֲרֹ֜ן אֶת־מַטֵּ֗הוּ לִפְנֵ֥י פַרְעֹ֛ה וְלִפְנֵ֥י עֲבָדָ֖יו וַיְהִ֥י לְתַנִּֽין׃

εἰσῆλθεν δὲ Μωυσῆς καὶ Ἀαρὼν ἐναντίον Φαραὼ καὶ τῶν θεραπόντων, αὐτοῦ, καὶ ἐποίησαν οὕτως καθάπερ ἐνετείλατο αὐτοῖς Κύριος· καὶ ἔριψεν Ἀαρὼν τὴν ῥάβδον ἐναντίον Φαραὼ καὶ ἐναντίον τῶν θεραπόντων αὐτοῦ, καὶ ἐγένετο δράκων.

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

Vinieron, pues, Moisés y Aarón á Faraón, é hicieron como Jehová lo había mandado: y echó Aarón su vara delante de Faraón y de sus siervos, y tornóse culebra.

So Moses and Aaron went to Pharaoh and did just as the LORD had commanded. Aaron threw his staff down before Pharaoh and his officials, and it became a serpent.