If anyone teaches a different doctrine, and doesn't consent to sound words, the words of our Lord Jesus Christ, and to the doctrine which is according to godliness,
That was the thing that Nathan nailed David with, after David's experience with Bathsheba. He had said to David, "David, you've caused the enemies of God to blaspheme" ( 2 Samuel 12:14 ). You've given occasion to the enemies of God to lay blame against Christianity or against Jesus Christ because of your slovenliness. More is expected of you because you are a Christian. Produce more, Paul is saying.