However, in another sense you are quite possibly wrong. You see, the Bible talks about physical blindness. But, the Bible also speaks about spiritual blindness. In fact, the Bible is filled with references to people in the past who were spiritually blind. In the Book of Psalms we read about people who are not seriously interested in God.
Spiritual blindness is a terrible thing, a frightening thing.
And this is also why God sent Jesus as the Light of the World. Here Isaiah was talking about the Lord Jesus Christ. So, my friends, if you and I are going to be healed, we must first admit and confess that we are, indeed, spiritually blind. In Romans 4 St. Paul describes bluntly our spiritual condition. You see, unless a person who has difficulty hearing admits this problem, he will never, ever, desire a hearing aid.