The molten sea was a very large copper basin made by Solomon for the temple, serving a purpose comparable to the laver of the tabernacle. It held water for priestly washing and stood on twelve oxen facing outward.
The molten sea belonged to the temple furnishings and was used for priestly cleansing. It was later altered by Ahaz and finally broken up by the Assyrians.
It was about fifteen feet in diameter and seven and a half feet deep, holding two or three thousand baths. Its copper came from cities captured by David from Hadarezer king of Zobah.