Titus 3:9 in the King James Version
But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
Context
8 This saying is faithful, and concerning these things I desire that you insist confidently, so that those who have believed God may be careful to maintain good works. These things are good and profitable to men;
9 but shun foolish questionings, genealogies, strife, and disputes about the law; for they are unprofitable and vain.
10 Avoid a factious man after a first and second warning,