'Sound' in the Bible

For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;

In pointing out these things to the brethren, you will be a good servant of Christ Jesus, constantly nourished on the words of the faith and of the sound doctrine which you have been following.

If anyone teaches other doctrine and does not agree with the sound teaching of our Lord Jesus Christ and with the teaching that promotes godliness,