4 what he did to the Egyptian army, to their horses and chariots, how he made the water of the Red Sea flow over them as they pursued you, so that the Lord has destroyed them to this day; 5 what he did to you in the wilderness, until you came to this place; 6 and what he did to Dathan and Abiram, sons of Eliab son of Reuben, how in the midst of all Israel the earth opened its mouth and swallowed them up, along with their households, their tents, and every living being in their company; 7 for it is your own eyes that have seen every great deed that the Lord did.

The Blessings of the Promised Land

8 Keep, then, this entire commandment that I am commanding you today, so that you may have strength to go in and occupy the land that you are crossing over to occupy, 9 and so that you may live long in the land that the Lord swore to your ancestors to give them and to their descendants, a land flowing with milk and honey.

Matthew Henry's Commentary on Deuteronomy 11:4-9

Commentary on Deuteronomy 11:1-7

(Read Deuteronomy 11:1-7)

Observe the connexion of these two; Thou shalt love the Lord, and keep his charge. Love will work in obedience, and that only is acceptable obedience which flows from a principle of love, 1 John 5:3. Moses recounts some of the great and terrible works of God which their eyes had seen. What our eyes have seen, especially in our early days, should affect us, and make us better long afterwards.

Commentary on Deuteronomy 11:8-17

(Read Deuteronomy 11:8-17)

Moses sets before them, for the future, life and death, the blessing and the curse, according as they did or did not keep God's commandment. Sin tends to shorten the days of all men, and to shorten the days of a people's prosperity. God will bless them with an abundance of all good things, if they would love him and serve him. Godliness has the promise of the life that now is; but the favour of God shall put gladness into the heart, more than the increase of corn, and wine, and oil. Revolt from God to idols would certainly be their ruin. Take heed that your hearts be not deceived. All who forsake God to set their affection upon any creature, will find themselves wretchedly deceived, to their own destruction; and this will make it worse, that it was for want of taking heed.