"Blind" is a person who is mired in a multitude of sins that cover, destroy the spiritual "Sight", i.e. his mind, thinking, consciousness, conscience, who does not show efforts to get rid of them, who has no knowledge of the essence of Christ's Teachings about God's Will, His Commandments.

"Blind" is a person who does not understand, who rejects the obviousness of the true benefit of knowing and obeying God's Commandments as expressed by the Patriarchs, Prophets, Jesus Christ and Apostles in the Holy Scriptures.   

"Blind" is a person who, due to rejection, violation of God's Commandments, has lost true spiritual "Sight" - has lost the ability to correctly evaluate his thoughts and actions, to see the causes of his spiritual "illnesses" and ways to "cure" them - to get rid of delusions, has lost the desire and ability to distinguish between "Light" and "Darkness", good and evil, the ability to make the right choice of life's path.

Translated with DeepL.com (free version)