The throne is a metonym for the person sitting on the throne. Alternate translation: "I will take kings off of their thrones" (See: [[rc://en/ta/man/jit/figs-metonymy]])
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/jit/figs-explicit]])
The sword here is a metonym for violent death. Alternate translation: "each one because his brother has killed him" (See: [[rc://en/ta/man/jit/figs-metonymy]])