The words "we use words" are understood from the previous phrase. Here "cover up" is a metaphor for keeping people from knowing something. AT: "nor did we use words to cover up greed" or "and we did not use words to hide an evil desire for your money" (See: [[rc://en/ta/man/translate/figs-ellipsis]] and [[rc://en/ta/man/translate/figs-metaphor]])