The Assyrian Church is aware through its textual tradition that Mark 16:9-20 is not found in the earliest Greek manuscripts. However, the Eastern liturgical tradition has included this passage in various forms, and its theological content—the risen Christ, the commission to preach, the promise of signs—is affirmed by the Church. The Church treats the passage pragmatically: if it appears in liturgical or devotional texts, its content is affirmed.

Textual criticism is not a primary concern for Assyrian Church practice; the focus is on the theological and liturgical tradition.