What does Jeremiah 17:22 mean?

Yahweh said this to me: “Go, and stand in the gate of the children of the people, through which the kings of Judah come in and by which they go out, and in all the gates of Jerusalem.

Tell them, ‘Hear Yahweh’s word, you kings of Judah, and all Judah, and all the inhabitants of Jerusalem, that enter in by these gates:

Yahweh says, “Be careful, and bear no burden on the Sabbath day, nor bring it in by the gates of Jerusalem.

But they didn’t listen. They didn’t turn their ear, but made their neck stiff, that they might not hear, and might not receive instruction.

It will happen, if you diligently listen to me,” says Yahweh, “to bring in no burden through the gates of this city on the Sabbath day, but to make the Sabbath day holy, to do no work therein;

then there will enter in by the gates of this city kings and princes sitting on David’s throne, riding in chariots and on horses, they, and their princes, the men of Judah, and the inhabitants of Jerusalem; and this city will remain forever.