How do we know the gospel's authority is true?

The true authority of the gospel is rooted in the character and works of Christ. The message is validated by His perfect obedience, even unto death, providing redemption through His shed blood. Paul emphasizes in Philippians that our understanding of the gospel must also come with an acknowledgment of its divine authority and our human inability to choose God without His initiating grace. This dynamic showcases that salvations of the Lord, relying solely on His work and not on our efforts, proves the gospel's truth and authority.