How do we know the light of the Gospel is sufficient for salvation?

The light of the Gospel, as expressed in 2 Corinthians 4:6, showcases the knowledge of God's glory that is found in Jesus Christ. This Gospel illumination is essential for salvation because it provides clarity on the human condition and the redemptive work of Christ. By nature, people cannot come to God without this divine revelation, which transforms their understanding of sin and righteousness. The Gospel offers a clear pathway to salvation through faith in Christ, establishing that it alone is the power of God unto salvation for everyone who believes.