Crossword clue: a book of the apocrypha.
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
ecclesiasticus
14 letters
web-def
an Apocryphal book mainly of maxims (resembling Proverbs in that respect)
tobit
5 letters
web-def
an Apocryphal book that was a popular novel for several centuries