“quarrel.” Proverbs 3:30 has a wide range of application. The word we translate “quarrel” is reb (#07378 רִיב) and it can mean to strive or fight physically or with words, to lodge a complaint against, or to make a lawsuit against. So the fullness of the Proverb is more like: “Do not fight with someone for no reason, or lodge a complaint or start a lawsuit with someone for no reason.” “No reason,” of course, means no godly reason. Getting money or proving your point is not a godly reason to quarrel with someone or start a lawsuit (1 Cor. 6:1-8).