If swords are not known, use the name of a local weapon. The word "sword" is a metonym for being ready to fight in war. AT: "may they always be ready to go to war for him" (See: [[rc://en/ta/man/translate/figs-ellipsis]] and [[rc://en/ta/man/translate/figs-metonymy]])
The phrase "the nations" is a metonym for the people who live in the nations. AT: "the people of the nations" (See: [[rc://en/ta/man/translate/figs-metonymy]])