What does the Bible say about ignorance in Ephesians?

In Ephesians 4:17-18, Paul explains that ignorance stems from a darkened understanding, as believers are called to walk differently than those in the world. The Gentiles, or unbelievers, are alienated from the life of God due to their ignorance. Paul highlights that when Adam sinned, humanity's understanding was darkened, resulting in a loss of spiritual perception. Therefore, our ignorance of spiritual truths necessitates divine revelation, underscoring the need for God's grace in opening our minds to comprehend His Word and Gospel.