The Jews devoutly listened to the Scriptures weekly. Because these Scriptures were rare and expensive, they were memorized, particularly the Psalms. It is common knowledge that prior to printed books memorization was the primary way that knowledge was transmitted.

When you read something like the sermon to the Hebrews, you find it is rife with scriptural references a devout Jew would know from Scriptures. For example, the heavenly Temple follows precisely the description given to Moses for the construction of the first Temple.

Have you actually done any Scripture studies in a formal environment where you would encounter this sort of information, or are you relying on pop summaries of biblical theories in the popular press?