I posted the excerpt a while back, but it needs repeating.
"Foolish controversies: Paul again warns against becoming embroiled in senseless discussion with the many false teachers on Crete, especially the Judaizers who contended that a Christian must be obedient to the 'The (Mosaic) Law', a view that assaulted the doctrine of justification by grace through faith alone and, contrary to holy living, which was good and profitable, was 'unprofitable and worthless.' Proclaiming the truth, not arguing error, is the biblical way to evangelize." John MacArthrur Bible study notes on Titus 3:9.
