The Bible

Biblical references in the story are, necessarily, drawn from the Scriptures ( the Old Testament as many refer to it today), which was all that Jews at the time had reference to. The New Testament is, of course, written decades after the life of Christ.

The Jews know The Bible as The Tanakh or Hebrew Bible, which comprises 24 books, divided into three main sections:
Torah, Nevi’im (or Navi), and Ketuvim. The Torah ('Instruction') is the first five books of Moses, or The Pentateuch.

Part of The Tanakh was translated into Greek in the third century BC, and is known as The Septuagint.

Any Biblical reference in The Agnostic Gospels is taken from today's Old Testament, verbatim.