The words "I will shake the earth" could be translated as "I will cause an earthquake." Yahweh speaks of the heavens as if they also were solid objects that he could shake. See how these ideas are translated in [Haggai 2:6](../02/06.md).(See: [[rc://en/ta/man/translate/figs-metaphor]])
Use the verb you usually use for pushing trees back and forth to get fruit or other objects to fall from them. See how you translated this in [Haggai 2:6](../02/06.md).
You may need to make explicit that "the nations" are Israel's enemies. Alternate translation: "I will make it so the kingdoms of the nations that are Israel's enemies are no longer strong" (See: [[rc://en/ta/man/translate/figs-explicit]])