Leonard Churchill suddenly had a moment of realization, wondering why the people from the Holy Church of the Southern Continent were seeking these jars!
The jar gave him the feeling of a...power bank for charging a cellphone?
When needed, would they release it to let Them recharge themselves before using it again?
Although the analogy wasn't quite accurate,
it roughly conveyed the idea.
"Yes, and no."
Tracy Garcia neither confirmed nor denied but corrected him, "The pottery jar is far more mysterious than what is seen. They are tied to the ultimate secrets of the Plane. Some merely regard Them as a source of Divine Power supply."