whose minds the god of this age has blinded, who do not believe,
lest the light of the gospel of the glory of Christ,
who is the image of God, should shine on them.
The Good News is revealed to everyone, except to those who refuse to believe. Satan is "the god of this evil world." His work is to deceive, and he has blinded those who don't believe in Christ (2 Corinthians
When you are blinded, you cannot see things as they really are, even though others around you see them clearly. You cannot experience the full reality of all that is around you. You may feel you are experiencing all that there is to life, yet you may be unaware that you are missing what God desires for you. You may even be in danger because of your blindness and not know it.
Paul warned that the “god of this age” can blind you to the reality of Jesus Christ. Christ's presence can make a significant difference in your life. However, if Satan convinces you to doubt that Christ can do what He promised, he will have blinded you to the reality of what your life is really like and to what it could become. Others may see what your unbelief causes you to miss, but you will be unaware of it. Your life may be steadily moving toward disaster, but you will be oblivious to it.
- Excerpt from “Experiencing God Day-By-Day” by Henry and Richard Blackaby