Exodus 32:5-6

And when Aaron had seen this thing, he builded an altar before the calf, and he cried by the voice of a crier, and said, Tomorrow is the solemnity of the Lord. And they rose early, and offered burnt sacrifices, and peaceable sacri-fices; and the people sat to eat and to drink, and they rose up to play, or to scorn, for idolatry is scorning of God .