How do we know the gospel is not hidden by preachers?

In 2 Corinthians 4:3-4, Paul explicitly states that if the gospel is hidden, it is hidden from those who are perishing, indicating that it is the work of the God of this world—Satan—who blinds their minds. The preaching of the gospel is intended to be clear and accessible, without any attempt at obfuscation by true messengers of Christ. The responsibility of preachers is to present the truth plainly, relying on the Holy Spirit to bring conviction and understanding to the hearts of the listeners. This highlights the spiritual battle at play, as the true enemy opposes the clarity of the gospel.