canon; scriptural canon
Primarily refers to the Biblical canon, but can extend to any authoritative collection of texts in a religious or literary tradition.
This gospel is not included in the canon.
The biblical canon was established around the 4th century.
canonization (textual)
From 正 (correct, orthodox) + 典 (code, rule, scripture). The combination directly yields the meaning 'canon' as a standard collection of authoritative texts.