Mar Narsai (413–503 CE) is arguably the most significant theological author of an entire segment of Apostolic Christianity, the "Church of the East," whose branches are now the Chaldean Catholic Church, the Assyrian Church of the East, and the Malabar Catholic Church. Narsai's metrical homilies are sources of deep scriptural reflection, breathtaking poetic beauty, and unique, insightful theology.