This is what the devil is doing to unbelievers
2 Corinthians 4:3-6 (AMP)
But even if our Gospel (the glad tidings) also be hidden (obscured and covered up with a veil that hinders the knowledge of God), it is hidden [only] to those who are perishing and obscured [only] to those who are spiritually dying and veiled [only] to those who are lost.
4 For the god of this world has blinded the unbelievers’ minds [that they should not discern the truth], preventing them from seeing the illuminating light of the Gospel of the glory of Christ (the Messiah), Who is the Image and Likeness of God.
5 For what we preach is not ourselves but Jesus Christ as Lord, and ourselves [merely] as your servants (slaves) for Jesus’ sake.
6 For God Who said, Let light shine out of darkness, has shone in our hearts so as [to beam forth] the Light for the illumination of the knowledge of the majesty and glory of God [as it is manifest in the Person and is revealed] in the face of Jesus Christ (the Messiah).