The Assyrian Church of the East includes the deuterocanonical books (Tobit, Wisdom, Sirach, Baruch, 1&2 Maccabees, etc.) in its biblical canon. The Eastern Christian tradition has generally maintained a broader canon than the Western Protestant tradition. These books are valued as Scripture and are used in liturgy, lectionary, and doctrinal instruction.

The Assyrian Church's canon reflects the Eastern Christian understanding that Scripture includes not only the narrower Palestinian canon but also the Alexandrian tradition's broader collection of inspired writings.