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.

134. Internal Meaning of Ezekiel, Chapter 11

Doctrine falsified. (2)

1-3 Beginning of the perversion of the church by means of falsities (the caldron here meaning doctrine, and the flesh the people) 2 (2)

4-7 by falsifications of the truth of doctrine. (2)

8-11 It will be even worse, and they will perish by reason of things falsified, (3)

12 because they will pervert all things. (3, 3)

13-16 All who are in falsities must be scattered; the church will consist of few. (3, 11)

17-20 A new church will be instituted by the Lord, which will be in truths from Him, (11)

21 at the time when the former church is being destroyed. (3)

22-23 The Word will enlighten the new church. (11)

24-25 This is made manifest to those who are in spiritual captivity. (11)