13 "It shall come about, if you listen obediently to my commandments which I am commanding you today , to love the Lord your God and to serve Him with all your heart and all your soul , 14 that He will give the rain for your land in its season , the early and late rain e , that you may gather in your grain and your new wine and your oil . 15 " He will give grass in your fields for your cattle , and you will eat and be satisfied . 16 " Beware that your hearts are not deceived , and that you do not turn away and serve other gods and worship them. 17 "Or the anger of the Lord will be kindled against you, and He will shut up the heavens so that there will be no rain and the ground will not yield its fruit ; and you will perish quickly from the good land which the Lord is giving you.

18 " You shall therefore impress these words of mine on your heart and on your soul ; and you shall bind them as a sign on your hand , and they shall be as frontals on your forehead e . 19 " You shall teach them to your sons , talking of them when you sit in your house and when you walk along the road and when you lie down and when you rise up. 20 " You shall write them on the doorposts of your house and on your gates , 21 so that your days and the days of your sons may be multiplied on the land which the Lord swore to your fathers to give them, as long as the heavens remain above the earth .

Matthew Henry's Commentary on Deuteronomy 11:13-21

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.

Commentary on Deuteronomy 11:18-25

(Read Deuteronomy 11:18-25)

Let all be directed by the three rules here given. 1. Let our hearts be filled with the word of God. There will not be good practices in the life, unless there be good thoughts, good affections, and good principles in the heart. 2. Let our eyes be fixed upon the word of God, having constant regard to it as the guide of our way, as the rule of our work, Psalm 119:30. 3. Let our tongues be employed about the word of God. Nor will any thing do more to cause prosperity, and keeping up religion in a nation, than the good education of children.