Pot
Pots" and other large vessels in the Bible represent facts and factual ideas, which serve as containers for truth the same way pots serve as containers for water or wine. Pots fill their function because they are hard, strong and impervious; facts are also absolute and unchanging, filling their function the same way. And pots must be filled to serve any use, just as facts must be filled with truth to serve any purpose. To some extent this meaning also applies to cups, bowls and other smaller vessels, though it is a little more immediate. Generally you don't fill a cup so you can store a liquid; you fill it to drink it. Smaller vessels then often take more of their meaning from the substance they contain, and in many cases ("cup" and "wine" especially) actually mean the same thing.
Isaiah 1:4-8
4
Ah sinful nation, a people loaded with iniquity, a seed of evildoers, children who deal corruptly! They have forsaken Yahweh. They have despised the Holy One of Israel. They are estranged and backward.
5
Why should you be beaten more, that you revolt more and more? The whole head is sick, and the whole heart faint.
6
From the sole of the foot even to the head there is no soundness in it: wounds, welts, and open sores. They haven't been closed, neither bandaged, neither soothed with oil.
7
Your country is desolate. Your cities are burned with fire. Strangers devour your land in your presence, and it is desolate, as overthrown by strangers.
8
The daughter of Zion is left like a shelter in a vineyard, like a hut in a field of melons, like a besieged city.
