Removing their speech represents making them unable to speak. Alternate translation: "He makes those who were trusted unable to speak" or "He silences people whom others trusted" (See: [[rc://en/ta/man/jit/figs-metonymy]])
Taking away their understanding represents making them unable to understand or make good decisions. Alternate translation: "makes the elders unable to understand" or "makes the elders unable to make good decisions" (See: [[rc://en/ta/man/jit/figs-metonymy]])