How do we know the gospel is the only saving message?

The Apostle Paul asserts that there is no other gospel than the one he has preached, which centers on God's grace and Christ's redemptive work (Galatians 1:6-9). Any distortion of this gospel leads to peril, as emphasized in his warning against false teachers. Sovereign grace theology holds that the fullness of salvation is found solely in the work of Christ, asserting that salvation cannot be earned through personal merit or morality. Therefore, the gospel remains the only message that saves, rooted deeply in God's sovereign design and love.