וַיְדַבֵּ֣ר אַהֲרֹ֔ן אֵ֚ת כָּל־הַדְּבָרִ֔ים אֲשֶׁר־דִּבֶּ֥ר יְהוָ֖ה אֶל־מֹשֶׁ֑ה וַיַּ֥עַשׂ הָאֹתֹ֖ת לְעֵינֵ֥י הָעָֽם׃
And Aaron spoke all the words which the LORD had spoken unto Moses, and did the signs in the sight of the people.
Read midrashic interpretation of Exodus 4:30: and classical rabbinic exegesis.