And even if our gospel is veiled, it is veiled to those who are perishing,in whose case the god of this world has blinded the minds of the unbelieving so that they might not see the light of the gospel of the glory of Christ, who is the image of God.For we do not preach ourselves but Christ Jesus as Lord, and ourselves as your bond-servants for Jesus’ sake.For God, who said, “Light shall shine out of darkness,” is the One who has shone in our hearts to give the Light of the knowledge of the glory of God in the face of Christ. (2 Cor 4:3–6)

“In context, he is making it clear that this rejection is not due to any flaws in the message or even in the messengers. If unbelievers reject the gospel, it is because Satan has blinded their minds. But the passage does not simply state that Satan blinds unbelievers from seeing the gospel. Verse 4 says that Satan “has blinded the minds of the unbelieving so that they might not see the light of the gospel of the glory of Christ, who is the image of God.” So, the devil keeps people trapped in condemnation by blocking their vision of the “glory of Christ, who is the image of God.” The heart of the gospel message, therefore, is the glory of Christ. Verse 6 further expands on God’s glory in the gospel by describing the gospel message as “the knowledge of the glory of God in the face of Christ.” The gospel that saves people is a gospel that reveals God’s glory in Jesus Christ. If people don’t accept the gospel, it is because they don’t see God’s glory in it. The verse that comes between these two phrases further reinforces this truth. It is precisely because the gospel is “the gospel of the glory of Christ” and “the knowledge of the glory of God in the face of Christ” that Paul without hesitation claims, “we do not preach ourselves but Christ Jesus as Lord.” Contrary to many contemporary approaches of evangelism that tailor-make the gospel to fit the needs of the hearer, the biblical gospel focuses first on Christ, not the sinner. We preach Christ, not an eternal life insurance policy or keys to changing your life. The gospel, the message that is the heart of missions, is the truth that God’s glory is revealed in Jesus Christ. He is Lord before whom all will bow, either now in repentance or later in judgment.” (David M. Doran, For the Sake of His Name (Detroit Baptist Theological Seminary, 2018), 16-17)