Why would someone be 'perishing'? And what does that have to do with a veiled gospel?
Paul links the veiling of the gospel directly to a state of spiritual death, or 'perishing.' This isn't about God arbitrarily choosing who gets it and who doesn't. It's about the natural consequence of rejecting God's truth. In their current state, their minds are darkened, and the enemy, Satan, actively works to keep them blinded to the light of the glorious gospel of Christ (verse 4). It's a spiritual condition that prevents them from seeing the truth, not a lack of clarity in the message itself.