1 Corinthians 3:1–4
 But I, brothers, could not address you as spiritual people, but as people of the flesh, as infants in Christ.  I fed you with milk, not solid food, for you were not ready for it. And even now you are not yet ready,  for you are still of the flesh. For while there is jealousy and strife among you, are you not of the flesh and behaving only in a human way?  For when one says, “I follow Paul,” and another, “I follow Apollos,” are you not being merely human? (ESV)
1 Corinthians 6:1–8
 When one of you has a grievance against another, does he dare go to law before the unrighteous instead of the saints?  Or do you not know that the saints will judge the world? And if the world is to be judged by you, are you incompetent to try trivial cases?  Do you not know that we are to judge angels? How much more, then, matters pertaining to this life!  So if you have such cases, why do you lay them before those who have no standing in the church?  I say this to your shame. Can it be that there is no one among you wise enough to settle a dispute between the brothers,  but brother goes to law against brother, and that before unbelievers?  To have lawsuits at all with one another is already a defeat for you. Why not rather suffer wrong? Why not rather be defrauded?  But you yourselves wrong and defraud—even your own brothers!