What does the Bible say about personal testimonies?

The Bible stresses that while personal testimonies are powerful tools for sharing faith, they must always redirect the focus away from ourselves and towards Christ. In Philippians 3, the Apostle Paul shares his own testimony, highlighting his life before, at, and after conversion. However, he carefully emphasizes how his past efforts and credentials amounted to nothing without Christ. A effective testimony shows Christ's work in one's life, as true salvation is solely through Him and not through personal achievements or morality.