Jeremiah 10:9

Silver spread into plates is brought from Tarshish, from Tartessus in Spain, whose gold mines were well known in the ancient world, and gold from Uphaz, or Ophir, 1 Kings 9:27, the work of the workman, beaten into the form of a thin covering by the goldsmith, and of the hands of the founder, the artist in precious metals; blue and purple is their clothing, made of the finest cloth, Exodus 25:4; they are all the work of cunning men, of craftsmen possessing a very high degree of skill. The thought evidently is this: No matter how the idolaters strive to give their statues the semblance of living and mighty beings by ornamenting them in this fashion, they still remain idols and cannot be elevated to the position of gods.