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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.
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Exodus 32:4 • KJVThis verse describes Aaron directly creating the golden calf idol while Moses was on Mount Sinai. The Israelites requested this idol, and Aaron crafted it, which was a direct violation of God's commandment against making graven images.