"Spring," for its first eight lines at least, is a praise-poem. Our speaker celebrates the beauty of nature and the profound effects it can have on man. The act of paying close attention to the natural world, and then allowing it to fill him with awe, seems to be of great importance to the speaker of this poem. The celebration of beauty is also closely linked with his contemplation of theology and the act of prayer.
Because the speaker's praise seems to be based on the fact that spring resembles the Garden of Eden and the what Christianity considers the original relationship between man and nature, the praise in this poem is really a lament for the fall of man and the fact that the initial perfection of Eden could not be maintained.