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.
Zechariah 8:3-5
3
Thus says Yahweh: "I have returned to Zion, and will dwell in the midst of Jerusalem. Jerusalem shall be called 'The City of Truth;' and the mountain of Yahweh of Armies, 'The Holy mountain.'"
4
Thus says Yahweh of Armies: "Old men and old women will again dwell in the streets of Jerusalem, every man with his staff in his hand for very age.
5
The streets of the city will be full of boys and girls playing in its streets."
