Exodus 32:4-5

Exodus 32:4-5 And he received them at their hand, and fashioned it with a graving tool, after he had made it a molten calf: and they said, These be thy gods, O Israel, which brought thee up out of the land of Egypt. And when Aaron saw it, he built an altar before it; and Aaron made proclamation, and said, Tomorrow is a feast to the Lord.