Conversation so far:
who is speaking in the book of deuteronomy
The Book of Deuteronomy is the fifth book of the Jewish Torah, where it is called Devarim, Hebrew for the Words of Moses.
what is in the first 30 chapters of deuteronomy
Chapters 1–30 of the book consist of three sermons or speeches delivered to the Israelites by Moses on the plains of Moab, shortly before they enter the Promised Land.

Question: what is the etymology of the title
Self-contained rewrite: what is the etymology of the title deuteronomy