When one of you has a grievance against his neighbor, does he dare to go to law before a heathen court, instead of laying the case before God's people?

Do you not know that God's people are to judge the world? And if the world is to be judged before you, are you unfit to try such petty cases?

but one brother has to go to law with another, and that before unbelieving judges?

If some unbelieving heathen invites you to his house, and you wish to go, eat whatever is set before you without raising any question for conscience' sake.