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.The first rain and the latter rain - The former is the proper term for the autumn rain, falling about the time of sowing, and which may be named "the former," as occurring in the early part of the Hebrew civil year, namely, in October and November. The other word is applied to the spring rain, which falls in March and April, because it fits the earth for the ingathering of harvest. Between these two wet periods, and except them, there was little or no rain in Canaan. 15-17. I will send grass in thy fields for thy cattle—Undoubtedly the special blessing of the former and the latter rain [De 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 [De 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 It was threatened to be withdrawn on their disobedience or apostasy; and most signally is the execution of that threatening seen in the present sterility of Palestine.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 (De 11:9) flowing with milk and honey." Heaven is compared sometimes to a bottle, Job 38:37, which may be either stopped or opened; sometimes to a great storehouse, wherein God lays up his treasures of rain, Job 38:22 Psalm 33:7, the doors whereof God is said to open when he gives rain, and to shut when he withholds it. See 1 Kings 8:35 2 Chronicles 6:26 7:13.

And then the Lord's wrath be kindled against you,.... For their idolatry, nothing being more provoking to him than that, it being contrary to his nature and being, as well as to his will, and to his honour and glory:

and he shut up the heaven, that there be no rain; the treasures and storehouses of it there, or the windows of it, the clouds, which when opened let it down, but when shut withhold it; the key of rain is one of the keys which the Jews say (k) the Lord keeps in his own hand, and with it he opens and no man shuts, and shuts and no man opens; see Deuteronomy 28:12.

and that the land yield not her fruit; which is unavoidably the case when rain is withheld:

and lest ye perish quickly from off the good land which the Lord giveth you; for if the land does not yield its fruits sufficient to support the inhabitants of it, they must in course perish.

(k) Targum Jon. in Deuteronomy 28.12.

And then the LORD's wrath be kindled against you, and he shut up the heaven, that there be no rain, and that the land yield not her fruit; and lest ye perish quickly from off the good land which the LORD giveth you.