Here the author speaks of authority as if it were greatness. Alternate translation: "I have more authority in this house than anyone else" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Joseph uses a question for emphasis. This can be written as a statement. Alternate translation: "I certainly cannot do such a wicked thing and sin against God." (See: [[rc://en/ta/man/translate/figs-rquestion]])