Elisha uses this rhetorical question to rebuke the king and tell him not to kill these men. The words "sword and bow" are a metonym for war in which soldiers use swords and bows and arrows. This can be written as a statement. Alternate translation: "You would not kill men whom you had captured in war, so you should not kill these men." (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-metonymy]])
Here "bread" refers to food in general. Alternate translation: "Give them food to eat and water to drink" (See: [[rc://en/ta/man/translate/figs-synecdoche]])