Mark Dever
To evangelize is to declare on the authority of God what he has done to save sinners, to warn men of their lost condition, to direct them to repent, and to believe in the Lord Jesus Christ.

And even if our gospel is veiled, it is veiled to those who are perishing. In their case the god of this world has blinded the minds of the unbelievers, to keep them from seeing the light of the gospel of the glory of Christ, who is the image of God.
2 Corinthians 4:3-4