'Light of the Gospel' in the Bible

in whom the god of this world hath blinded the minds of the unbelieving, that the light of the gospel of the glory of Christ, who is the image of God, should not dawn upon them .

But we have this precious treasure [the good news about salvation] in [unworthy] earthen vessels [of human frailty], so that the grandeur and surpassing greatness of the power will be [shown to be] from God [His sufficiency] and not from ourselves.