This can be stated in positive terms. Alternate translation: "Only be tied together with believers" (See: [[rc://en/ta/man/translate/figs-doublenegatives]])
Paul speaks of working together toward a common purpose as if it were two animals tied together to pull a plow or cart. Alternate translation: "team up with" or "have a close relationship with" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This is a rhetorical question that anticipates a negative answer. Alternate translation: "For righteousness can have no association with lawlessness" (See: [[rc://en/ta/man/translate/figs-rquestion]])
Paul asks this question to emphasize that light and darkness cannot coexist since light dispels darkness. The words "light" and "darkness" refer to the moral and spiritual qualities of believers and unbelievers. Alternate translation: "Light can have no fellowship with darkness" (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-metaphor]])