Exodus 32:1-4

1And when the people saw that Moses delayed to come down from the mount, the people gathered themselves together to Aaron, and said to him, Arise, make us gods, which shall go before us; for as for this Moses, the man that brought us out of the land of Egypt, we know not what is become of him.

2And Aaron said to them, Break off the golden earrings, which are in the ears of your wives, of your sons, and of your daughters, and bring them to me.

3And all the people broke off the golden earrings which were in their ears, and brought them to Aaron.

4And he received them at their hand, and fashioned it with an engraving tool, after he had made it a molten calf: and they said, These are thy gods, O Israel, which brought thee out of the land of Egypt.