In a manner conforming to proper usage, custom, or law. Paul uses this adverb twice in the Pastoral Epistles to emphasize right application of right things. In 1 Timothy 1:8, he states 'the law is good, if one uses it lawfully'—proper use distinguishes beneficial from harmful application. In 2 Timothy 2:5, the image shifts to athletics: an athlete must 'compete according to the rules' to receive the crown. Both contexts stress that good things improperly used become destructive.