What does the Bible say about holding fast to sound words?

In 2 Timothy 1:13, Paul explicitly urges Timothy to 'hold fast the form of sound words,' indicating the importance of maintaining the integrity of the gospel message. This holding fast is not a mere suggestion; it is crucial for the preservation of both the gospel and the believer's faith. Paul emphasizes that a distortion of the gospel, even in small ways, results in a complete loss of its truth. Sound words signify uncorrupted speaking, and the integrity of these words is to be secured by the Holy Spirit's guidance. Paul’s letters are filled with reminders of the centrality of sound doctrine, which reflects the gospel.