John Wesley on Exodus 32:5

And Aaron built an altar before it, and proclaimed a feast - A feast of dedication; yet he calls it a feast to Jehovah; for, as brutish as they were, they did not design to terminate their adoration in the image; but they made it for a representation of the true God, whom they intended to worship in and through this image. And yet this did not excuse them from gross idolatry, no more than it will excuse the Papists, whose plea it is, that they do not worship the image, but God by the image; so making themselves just such idolaters as the worshippers of the golden calf, whose feast was a feast to Jehovah, and proclaimed to be so, that the most ignorant and unthinking might not mistake it.