Charles Spurgeon Commentary 2 Corinthians 4:3-4

"And even if our gospel is veiled, it is veiled in them that perish: 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]." — 2 Corinthians 4:3-4 (ASV)

But if our gospel be hid, it is hid to them that are lost: in whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.

The light of the gospel is so glorious and bright that it is only hidden from those who have been blinded by Satan, "the god of this world." The only hope for them is to believe in Jesus who can give sight to the spiritually blind as easily as he gave sight to the physically blind when he was here in the flesh.

But if our gospel be hid, it is hid to them that are lost: in whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.

Without light from above, no one can perceive the beauties of either the gospel or of Christ himself. Until God the Holy Spirit sheds spiritual light on the person, offices, and work of Christ, people grope in the dark as blind people do. They do not see the truth and are not persuaded of its excellence; our ministry is to them a veiled ministry, and they do not comprehend it.

Let those who do not receive the gospel see what a miserable state theirs is: they are blinded by "the god of this world." He has such supremacy over their intellects that he has utterly perverted and ruined them.