What does the Bible say about faith in Jesus?

The Scriptures consistently affirm the necessity of faith in Jesus Christ for salvation, as highlighted by passages such as 2 Timothy 1:12, where Paul expresses confidence in the One he has believed. This trust is not based on personal merit but on the righteousness of Christ. Only through faith in His sacrifice can sinners obtain mercy and hope for eternal life. James Guthrie, in his final words, underscores this truth by proclaiming that he places his entire trust in Christ’s righteousness, illustrating the core of Reformed theology that salvation is by grace alone through faith alone.