A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
deu 0:0DEUTERONOMY, the second law, a title which plainly shows what is the object of this book, namely, a recapitulation of the law. It was given in the form of public addresses to the people; and as Moses spoke in the prospect of his speedy removal, he enforced obedience to it by many forcible appeals to the Israelites, concerning their long and varied experience both of the mercies and the judgments of God. The minute notices of the heathen people with whom they had come in contact, but who afterward disappeared from the pages of history, as well as the accounts of the fertility and products of Canaan, and the counsels respecting the conquest of that country, fix the date of this book and the time of its composition by the hand of Moses. The close, however, must have been added by another; and, indeed, it is supposed by some to have formed the original preface to the Book of Joshua.