The letter continues the history lesson, how at the time of exile, Jeremiah insured that the people would not forget the commandments of the Lord or be led astray by temptations of the richer nation. Saving books is important: Nehemiah founded a library collecting the history of the kings and prophets and writings of David. Judas collected the books that had been lost during the war.
Does every church have a library? Does every library have readers?