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 11:1AN EXHORTATION TO OBEDIENCE. (Deu. 11:1-32)
Therefore thou shalt love the Lord thy God, and keep his charge--The reason for the frequent repetition of the same or similar counsels is to be traced to the infantine character and state of the church, which required line upon line and precept upon precept. Besides, the Israelites were a headstrong and perverse people, impatient of control, prone to rebellion, and, from their long stay in Egypt, so violently addicted to idolatry, that they ran imminent risk of being seduced by the religion of the country to which they were going, which, in its characteristic features, bore a strong resemblance to that of the country they had left.
deu 11:2I speak not with your children which have not known . . . But your eyes have seen all the great acts of the Lord which he did--Moses is here giving a brief summary of the marvels and miracles of awful judgment which God had wrought in effecting their release from the tyranny of Pharaoh, as well as those which had taken place in the wilderness. He knew that he might dwell upon these, for he was addressing many who had been witnesses of those appalling incidents. For it will be remembered that the divine threatening that they should die in the wilderness, and its execution, extended only to males from twenty years and upward, who were able to go forth to war. No males under twenty years of age, no females, and none of the tribe of Levi, were objects of the denunciation (see Num 14:28-30; Num 16:49). There might, therefore, have been many thousands of the Israelites at that time of whom Moses could say, "Your eyes have seen all the great acts which He did"; and with regard to those the historic review of Moses was well calculated to stir up their minds to the duty and advantages of obedience.
deu 11:10For the land, whither thou goest in to possess it, is not as the land of Egypt, from whence ye came out--The physical features of Palestine present a striking contrast to those of the land of bondage. A widely extending plain forms the cultivated portion of Egypt, and on the greater part of this low and level country rain never falls. This natural want is supplied by the annual overflow of the Nile, and by artificial means from the same source when the river has receded within its customary channel. Close by the bank the process of irrigation is very simple. The cultivator opens a small sluice on the edge of the square bed in which seed has been sown, making drill after drill; and when a sufficient quantity of water has poured in, he shuts it up with his foot. Where the bank is high, the water is drawn up by hydraulic engines, of which there are three kinds used, of different power, according to the subsidence of the stream. The water is distributed in small channels or earthen conduits, simple in construction, worked by the foot, and formed with a mattock by the gardener who directs their course, and which are banked up or opened, as occasion may require, by pressing in the soil with the foot. Thus was the land watered in which the Israelites had dwelt so long. Such vigilance and laborious industry would not be needed in the promised land. Instead of being visited with moisture only at one brief season and left during the rest of the year under a withering blight, every season it would enjoy the benign influences of a genial climate. The hills would attract the frequent clouds, and in the refreshing showers the blessing of God would especially rest upon the land.
deu 11:12A land which the Lord thy God careth for--that is, watering it, as it were, with His own hands, without human aid or mechanical means.
deu 11:14the first rain and the latter rain--The early rain commenced in autumn, that is, chiefly during the months of September and October, while the latter rain fell in the spring of the year, that is, during the months of March and April. It is true that occasional showers fell all the winter; but, at the autumnal and vernal seasons, they were more frequent, copious, and important; for the early rain was necessary, after a hot and protracted summer, to prepare the soil for receiving the seed; and the latter rain, which shortly preceded the harvest, was of the greatest use in invigorating the languishing powers of vegetation (Jer 5:24; Joe 2:23; Amo 4:7; Jam 5:7).
deu 11:15I will send grass in thy fields for thy cattle--Undoubtedly the special blessing of the former and the latter rain [Deu 11:14] was one principal cause of the extraordinary fertility of Canaan in ancient times. That blessing was promised to the Israelites as a temporal reward for their fidelity to the national covenant [Deu 11:13]. It was threatened to be withdrawn on their disobedience or apostasy; and most signally is the execution of that threatening seen in the present sterility of Palestine. MR. LOWTHIAN, an English farmer, who was struck during his journey from Joppa to Jerusalem by not seeing a blade of grass, where even in the poorest localities of Britain some wild vegetation is found, directed his attention particularly to the subject, and pursued the inquiry during a month's residence in Jerusalem, where he learned that a miserably small quantity of milk is daily sold to the inhabitants at a dear rate, and that chiefly asses' milk. "Most clearly," says he, "did I perceive that the barrenness of large portions of the country was owing to the cessation of the early and latter rain, and that the absence of grass and flowers made it no longer the land (Deu 11:9) flowing with milk and honey."
deu 11:18lay up these my words in your heart and in your soul, and bind them--(See on Deu 6:1).
deu 11:24Every place whereon the soles of your feet shall tread shall be yours--not as if the Jews should be lords of the world, but of every place within the promised land. It should be granted to them and possessed by them, on conditions of obedience:
from the wilderness--the Arabah on the south;
Lebanon--the northern limit;
Euphrates--their boundary on the east. Their grant of dominion extended so far, and the right was fulfilled to Solomon.
even unto the uttermost sea--the Mediterranean.
deu 11:26Behold, I set before you this day a blessing and a curse--(See on Deu 27:11).