Being the king's slave is spoken of as being an animal onto the shoulders of which the king puts a yoke so it can do heavy work. See how similar words were translated in [Jeremiah 27:8](../28/08.md).
Jeremiah uses this question to warn the king that his actions will lead to his death. AT: "For if you do not do this, you will surely die ... king." (See: [[rc://en/ta/man/translate/figs-rquestion]])