how does coelho effectively communicate to the reader the relief santiago feels as his long journey comes to a close?

Here is an excerpt at the end of the book that illustrates Santiago's final sense of peace and purpose.

Because only the hand understood that it was a larger design that had moved the universe to the point at which six days of creation had evolved into a Master Work. The boy reached through to the Soul of the World, and saw that it was a part of the Soul of God. And he saw that the Soul of God was his own soul. And that he, a boy, could perform miracles.