Exodus 32:2-6

2Aaron answered them, “Take off the gold earrings that your wives, your sons and your daughters are wearing, and bring them to me.” 3So all the people took off their earrings and brought them to Aaron.

4He took what they handed him and made it into an idol cast in the shape of a calf, fashioning it with a tool. Then they said, “These are your gods, Or This is your god; also in verse 8 Israel, who brought you up out of Egypt.” 5When Aaron saw this, he built an altar in front of the calf and announced, “Tomorrow there will be a festival to the LORD .”

6So the next day the people rose early and sacrificed burnt offerings and presented fellowship offerings. Afterward they sat down to eat and drink and got up to indulge in revelry.