The illustration at the end of the letter to Laodicea is striking. Our Lord stands at the door knocking. Christ then says, "If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me." But what does the passage indicate about the Laodicean at this point? Since he cannot hear His Savior's voice, his mind must be focused on something else!
This is a common occurrence in our lives today. Concentrating deeply on a job or a project, our minds can block out sounds and movement around us. Some people never seem to hear someone calling them when their noses are stuck between the pages of a book!
Just describing this ability another way, Jesus judges the Laodicean to be blind. Paul uses a different metaphor in I Thessalonians 5:4-8, saying that he is in the dark. Spiritually, blindness and living in darkness are much the same. How good is one's judgment when he cannot see? Living in darkness is the equivalent of being morally insensitive or unstable, that is, not knowing right from wrong.