2 Corinthians 4:3-5 NIV

[3] And even if our gospel is veiled, it is veiled to those who are perishing. [4] The god of this age has blinded the minds of unbelievers, so that they cannot see the light of the gospel that displays the glory of Christ, who is the image of God. [5] For what we preach is not ourselves, but Jesus Christ as Lord, and ourselves as your servants for Jesus’ sake.