Exodus 32:4
1 When the people saw that Moses delayed in coming down from the mountain, they gathered around Aaron and said to him, “Get up, make us gods that will go before us. As for this fellow Moses, the man who brought us up from the land of Egypt, we do not know what has become of him!” 2 So Aaron said to them, “Break off the gold earrings that are on the ears of your wives, your sons, and your daughters, and bring them to me.” 3 So all the people broke off the gold earrings that were on their ears and brought them to Aaron. 4 He accepted the gold from them, fashioned it with an engraving tool, and made a molten calf. Then they said, “These are your gods, O Israel, who brought you up out of Egypt.”
Deuteronomy 9:20
19 For I was terrified at the Lord’s intense anger that threatened to destroy you. But he listened to me this time as well. 20 The Lord was also angry enough at Aaron to kill him, but at that time I prayed for him too. 21 As for your sinful thing that you had made, the calf, I took it, melted it down, ground it up until it was as fine as dust, and tossed the dust into the stream that flows down the mountain.
Notes and References
"... Aaron is mentioned in 109 verses in Exodus, 77 in Leviticus, and 97 in Numbers. But here in Deuteronomy, when Moses recounts those forty years, he mentions Aaron only to say that he made the golden calf and that he died. This 's not only a striking difference in D; it is consistent with the notion that D is a Mushite source and P is plainly an Aaronid source ..."
Friedman, Richard Elliott The Bible with Sources Revealed: A New View Into the Five Books of Moses (p. 326) Harper San Francisco, 2005