Two books that I purchased recently for my research into the latter centuries BCE open in similar fashion, having to explain the use of the term, "Hebrews' Scriptures". One book was published in 1971 and again in 1987, while the other book was published in 2017.
I provide a searchable scan of these opening pages:
http://www.jwstudies.com/What_do_you_mean_by__The_Bible_.pdf
Doug