“In vain,
I have wearied myself.
Its thick rust
Does not depart
By the fire.
Yet,
When I cleansed you
In your filthy lewdness,
You did not become clean
From your filth.
You shall not again
Be cleansed
Until I have satisfied
My fury
Upon you.”
Yahweh, via Ezekiel, was upset that the thick rust did not leave the pot, even with all the burning fire. Yahweh had tried to cleanse them of their filthy lewdness, but they did not come clean from this dirt. Yahweh then said that he was not going to clean them again until his fury was satisfied.
Eugene Finnegan Bible Project 