Why is the message of Christ's gospel crucial?

The gospel of Christ is crucial for salvation because it articulates the truth that salvation is by grace through faith, not of works. In Matthew 23, Jesus rebukes the religious leaders for leading others astray with their false teachings, emphasizing the importance of preaching the true message of Christ and Him crucified. The Galatians were warned about turning to a perverted gospel, which highlights the danger of adding to or diminishing the significance of Christ's redemptive work. The gospel brings both hope and true peace to sinners burdened by their inability to save themselves.