The nominal adjective "the little" refers to few possessions. The nominal adjective "the righteous" refers to a righteous person. AT: "Better are the few possessions that a righteous person has" (See: [[rc://en/ta/man/translate/figs-nominaladj]])
Here "arms" represent the strength of the wicked people. Breaking their arms represents taking away their power. This could be stated in active form. AT: "For Yahweh will remove the strength of the wicked people" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])