2 Corinthians 4:3-4
But even if our gospel is hidden (behind a veil), it is hidden (only) to those who are perishing; among them, the god of this world (Satan) has blinded the minds of the unbelieving to prevent them from seeing the illuminating light of the gospel of the glory of Christ, who is the image of God.

We are drawn toward God either by our life experiences and choices or away. People have pivotal moments, and decisions are made. The illuminating light of the gospel and good experiences with Christians are key to salvation. Pray that the eyes of their understanding are opened so they can know the hope of the calling of Jesus.