What does the Bible say about being spiritually blind?

In Mark 8, we see the account of a blind man who was restored by Christ, which serves as an illustration for spiritual blindness. This passage demonstrates that, like the man who could not see, many people lack the ability to perceive their true condition before God. When the Lord opens our eyes, He allows us to see ourselves clearly, revealing our sinfulness and the need for His grace. This is not just about physical sight, but rather the spiritual insight that only comes through a relationship with Christ, where we acknowledge our dependence on His redemptive work.