Deuteronomy Chapter 1 דְּבָרִים

1 These are the words which Moses spoke to all Israel beyond the Jordan…

א  אֵלֶּה הַדְּבָרִים אֲשֶׁר דִּבֶּר מֹשֶׁה אֶל-כָּל-יִשְׂרָאֵל בְּעֵבֶר הַיַּרְדֵּן

Parshat Devarim is the first parsha of the fifth book of the Torah. The book of Devarim is sometimes called the “second Torah” because much of it is a summary of the other four books.  To emphasize that there are five books, the Parsha Nosh consists of “binding” five “books.”