וּמֹשֶׁ֣ה וְאַהֲרֹ֗ן עָשׂ֛וּ אֶת־כָּל־הַמֹּפְתִ֥ים הָאֵ֖לֶּה לִפְנֵ֣י פַרְעֹ֑ה וַיְחַזֵּ֤ק יְהוָה֙ אֶת־לֵ֣ב פַּרְעֹ֔ה וְלֹֽא־שִׁלַּ֥ח אֶת־בְּנֵֽי־יִשְׂרָאֵ֖ל מֵאַרְצֽוֹ׃ (פ)
Musa dan Harun telah melakukan semua mukjizat ini di hadapan Firaun, tetapi Yang Mahakekal mengeraskan hati Firaun, dan ia tidak membiarkan orang Israel pergi dari negerinya.
Rashi
ומשה ואהרן עשו וגו׳ AND MOSES AND AARON DID etc. — It (Scripture) has already written this in the description of all the preceding wonders, and it repeats it here only in order to connect it with the chapter which comes after this (as giving a reason why the commands in the next chapter were given to Aaron as well as to Moses; cf. Rashi’s comment on the following verse).
Chizkuni
את כל המופתים האלה, “all these miracles.' This refers to the nine plagues that had preceded the killing of the firstborn. G-d’s performing the 10th plague, however, would result in Pharaoh finally heeding all the warnings he had ignored previously. After the dying of the firstborn he will discharge the whole people and their portable belongings.
Ramban
AND MOSES AND AARON DID ALL THESE WONDERS. These are the wonders mentioned above. Scripture states this now because it completes [the narrative of] all the deeds they did [before Pharaoh], including the decree of the plague of the firstborn of which they already informed Pharaoh, for in the actual slaying of the firstborn, Moses and Aaron had no part.