8 This saying is trustworthy.n I want you to insist on these things, so that those who have believed God might be careful to devote themselves to good works. These are good and profitable for everyone. 9 But avoid foolish debates,o genealogies,p quarrels,q and disputes about the law, because they are unprofitable and worthless. 10 Reject a divisiver person after a first and second warning.s 11 For you know that such a person has gone astray and is sinning; he is self-condemned.