Exodus 32:20-23

20And he took the calf which they had made, and burnt it in the fire, and ground it to powder, and strawed it upon the water, and made the children of Israel drink of it.

21And Moses said unto Aaron, What did this people unto thee, that thou hast brought so great a sin upon them?

22And Aaron said, Let not the anger of my lord wax hot: thou knowest the people, that they are set on mischief.

23For they said unto me, Make us gods, which shall go before us: for as for this Moses, the man that brought us up out of the land of Egypt, we wot not what is become of him.