These verses suggest that Satan, also referred to as "the god of this world,” has a role in keeping people from understanding and accepting the gospel message. He is said to have blinded the minds of unbelievers so that they may not see the light of the gospel and be saved. This blindness is not a physical blindness but a spiritual one. It refers to the inability of the unbelievers to understand and accept the truth of the gospel message. Satan has deceived them into thinking that the message of Jesus is not true or that there are other ways of salvation. The verse also implies that Satan is actively working to oppose the spread of the gospel and to keep people from being saved. However, it's important to note that Satan's power is limited, and he is ultimately subject to the sovereignty of God, who can overcome Satan's schemes and bring people to salvation through the power of the gospel.