The birth of Jesus, the three kings, and Biblical allusions galore. "Journey of the Magi" has religion written all over it, and that's just the obvious stuff. Since the whole poem is about the coming of Christianity, every word is packed with religious meaning that can be picked apart with a fine-toothed comb. Allow Shmoop.
The heavy symbolism in the second stanza of "Journey" lends the poem a sense that even the Magus is unaware of just how significant a journey he is making.
The tone of "Journey of the Magi" shows us that religion is an intensely complicated, often painful, and sometimes even fatal process, not simply something that just exists.