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.
Jeremiah 33:10-12
10
Thus says Yahweh: Yet again there shall be heard in this place, about which you say, It is waste, without man and without animal, even in the cities of Judah, and in the streets of Jerusalem, that are desolate, without man and without inhabitant and without animal,
11
the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride, the voice of those who say, Give thanks to Yahweh of Armies, for Yahweh is good, for his loving kindness endures forever; [and of them] who bring [sacrifices of] thanksgiving into the house of Yahweh. For I will cause the captivity of the land to return as at the first, says Yahweh.
12
Thus says Yahweh of Armies: Yet again shall there be in this place, which is waste, without man and without animal, and in all its cities, a habitation of shepherds causing their flocks to lie down.
