We can do wonderful things today, such as giving some people their sight, but we have learned in the process that people do not know what they are seeing when they first gain their sight, because their brains have not been trained to recognize a book as a book, a tree as a tree, and so on.
Jesus took a blind man and gave him sight, but watch what happened,
“And he looked up and said, ‘I see men like trees, walking.’ Then He put His hands on his eyes again and made him look up. And he was restored and saw everyone clearly” (Mark 8:24-25).
What happened? With this two-stage miracle, Jesus showed us that He knows sight is more than just seeing something, but it is also recognizing what you see. He gave us insight into this phenomenon centuries before we knew about it. When He healed the man initially, the man knew that trees were upright, for he had felt them, but he saw men walking, who are also upright, and he confused the two. With the second part of the miracle Jesus gave the man’s brain the instant ability to know what he was seeing, something that takes us years to learn naturally. Jesus did these things, because He is the Creator, and by such He demonstrated His true identity.