The chief commander uses another question to ridicule Hezekiah and the people of Judah. This question may be written as a statement. Alternate translation: "I came here with Yahweh's command to destroy Jerusalem." (See: [[rc://en/ta/man/translate/figs-rquestion]])
This means to fight against the people and cause destruction in the place where they live. The land referred to here is Jerusalem. Alternate translation: "against this people and destroy their land ... Attack these people and destroy their land" (See: [[rc://en/ta/man/translate/figs-metonymy]])