These are all nominal adjectives. They can be stated as adjectives. Alternate translation: "those who are poor and those who are needy ... those who are wicked" (See: [[rc://en/ta/man/translate/figs-nominaladj]])
Here the word "hand" represents power or control. Alternate translation: "stop the wicked people from harming them" (See: [[rc://en/ta/man/translate/figs-metonymy]])