How do we know that the gospel is a great salvation?

The concept of the 'great salvation' in Hebrews 2:3 emphasizes its unmatched significance and the unique authority behind it—Jesus Christ himself. He is both the author and finisher of our faith, and this salvation is characterized by its wisdom, cost, and power. The gospel's ability to transform lives, providing freedom from sin and death, underscores how it is not just a message but the very means of redeeming grace, making it a truly great salvation accessible to the chief of sinners.