This rhetorical question emphasizes the negative answer that it anticipates. The question can be translated as a statement. Alternate translation: "The carved figure does no one any good!" (See: [[rc://en/ta/man/jit/figs-rquestion]])
This rhetorical question continues the idea in the first two sentences. You may need to add the ideas omitted in the ellipsis. Alternate translation: "Or what good is a cast metal figure? It is a teacher of lies" or "And a cast metal figure can does no one any good because it is a teacher of lies" (See: [[rc://en/ta/man/jit/figs-ellipsis]] and [[rc://en/ta/man/jit/figs-rquestion]])
This phrase personifies the cast metal figure as a teacher. People who look at a skillfully made idol falsely believe that it has power. Alternate translation: "a thing about which people believe lies" (See: [[rc://en/ta/man/jit/figs-personification]])