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
If the gospel offers true, genuine freedom, how can Satan blind people from receiving true, genuine freedom? It's to sell them fake freedom.