The author climbed the steeple in a hope to hear the graceful voice of God.
God told him to go down again because he lives among the people and he has to spend his life days while living in the midst of sea of the people.
The secret but strong message of the poem is that God is present everywhere and only that person would get success and attains a high position in the eyes of God if he or she serves generously the best creation of God i.e. the mankind.