2 Timothy 2:15-16

15Always try very much to serve God in a way that makes him happy. Then he will accept you as a good worker that he can trust. You must teach God's true message correctly. Then you will have no reason to be ashamed of your work.

16But stay away from people who talk about silly things that are not important to God. A message like that causes people to live more and more in a way that does not please God.