Exodus 32:1-5

32¹ Now when the people saw that Moses delayed to come down from the mountain , the people assembled about Aaron and said to him, "Come , make us a god who will go before us; as for this Moses , the man who brought us up from the land of Egypt , we do not know what has become of him." ² Aaron said to them, " Tear off the gold rings which are in the ears of your wives , your sons , and your daughters , and bring them to me." ³ Then all the people tore off the gold rings which were in their ears and brought them to Aaron . ⁴ He took this from their hand , and fashioned it with a graving tool and made it into a molten calf ; and they said , "This is your god , O Israel , who brought you up from the land of Egypt ." ⁵ Now when Aaron saw this, he built an altar before it; and Aaron made a proclamation and said , "Tomorrow shall be a feast to the Lord ."