What does the Bible say about the purpose of suffering for Christians?

In Philippians 1:29, Paul states that it has been granted to believers not only to believe in Christ but also to suffer for His sake. This echoes the sentiment found in 2 Timothy 3:12, which teaches that all who desire to live a godly life in Christ Jesus will be persecuted. Rather than being mere misfortunes, these sufferings are seen as a way to participate in Christ's sufferings, leading to greater fellowship with Him and the strengthening of faith. It reflects how believers are called out of the world and into a distinct covenant relationship with God.