On the one hand "I wouldn't to get too pedantic about a literal definition of what is actually — according to the Oxford-American-Heritage-Merriam-Webster dictionary — part of THE anointed Bible. That is not the way to go.
You build a site for a group of experts. If there are related texts which experts in this field tend to study because the texts are so closely tied to the subject, I would include them as "on topic" for this site"