Lastly, Leontius intimates that Theodore wrote a portion of a liturgy; "not content with drafting a new creed, he sought to impose upon the church a new Anaphora". A Syriac liturgy ascribed to "Mar Teodorus the Interpreter" is still used by the Assyrian Christians for a third of the year, from Advent to Palm Sunday. The proanaphoral and post-communion portions are supplied by the older liturgy "of the Apostles" (so called), the anaphora only being peculiar. Internal evidence confirms the judgment of Dr. Neale, who regards it as a genuine work of Theodore.