Moses' first words of his address make plain that his words will really be God's words. Moses draws attention to the covenant character of Israel's God, that he is the "Lord our God." He then hastens to quote the word of the Lord, uttered at Horeb, now also relevant in the plains of Moab, that in order for Israel to fully realize its status as a nation, it needs to move on, until it possess the Promised Land.
6 L'Eternel, notre Dieu, nous a parlé à Horeb, en disant: Vous avez assez demeuré dans cette montagne.