Yahweh uses these questions to emphasize that his word is much more powerful than the words of mere men. In that way, his word is like fire or a hammer. Alternate translation: "My word is powerful like fire ... and powerful like a hammer that shatters a rock into pieces." (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-simile]])