'Caldron' in the Bible

who say, [The time] is not near to build houses: this [city] is the caldron, and we are the flesh.

Therefore thus says the Lord Yahweh: Your slain whom you have laid in its midst, they are the flesh, and this [city] is the caldron; but you shall be brought forth out of its midst.

This [city] shall not be your caldron, neither shall you be the flesh in its midst; I will judge you in the border of Israel;

Utter a parable to the rebellious house, and tell them, Thus says the Lord Yahweh, Set on the caldron, set it on, and also pour water into it:

Take the choice of the flock, and also a pile [of wood] for the bones under [the caldron]; make it boil well; yes, let its bones be boiled in its midst.

Therefore thus says the Lord Yahweh: Woe to the bloody city, to the caldron whose rust is therein, and whose rust is not gone out of it! take out of it piece after piece; No lot is fallen on it.