Why is the gospel considered the only true message for salvation?

According to 1 Timothy 1:11, the gospel is described as the glorious gospel of the blessed God, entrusted to us for proclamation. This uniqueness of the gospel lies in its clear teaching that salvation is found in Jesus Christ alone. The pursuit of other doctrines or gospels—such as legalism or works-based systems—leads away from the truth of the gospel. Paul emphasizes to Timothy the importance of teaching no other doctrine, highlighting that there is only one true gospel that saves. This singular focus on Christ's atoning work underscores the message that only through faith in Him can individuals be justified and reconciled to God.