They are, like the stone idols, formal and inexpressive in style, while they are even ruder and coarser than those figures in workmanship.

We must regard them as intended chiefly for private use among the mass of the population, while we must view the stone idols as the objects of public worship in the shrines and temples.
Idols in metal have not hitherto appeared among the objects recovered from the Assyrian cities.

We may conclude, however, from the passage of Nahum prefixed to this chapter, as well as from general probability, that they were known and used by the Assyrians, who seem to have even admitted them--no less than stone statues--into their temples.

The ordinary metal used was no doubt bronze; but in Assyria, as in Babylonia, silver, and perhaps in some few instances gold, may have been employed for idols, in cases where they were intended as proofs to the world at large of the wealth and magnificence of a monarch.
The Assyrians worshipped their gods chiefly with sacrifices and offerings, Tiglath-Pileser I., relates that he offered sacrifice to Anu and Vul on completing the repairs of their temple.

Asshur-izir-pal says that he sacrificed to the gods after embarking on the Mediterranean.
Vul-lush IV, sacrificed to Bel-Merodach, Nebo, and Nergal, in their respective high seats at Babylon, Borsippa, and Cutha.