Deuteronomy 11:15

I 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 It was threatened to be withdrawn on their disobedience or apostasy; and most signally is the execution of that threatening seen in the present sterility of Palestine.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."

Jamieson, Fausset & Brown — Commentary Critical and Explanatory on the Whole Bible (1871) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

(15) That thou mayest eat and to full.—The same writer observes that “this is a further blessing, which belongs to the food itself in man’s inward parts.” It is possible to eat and not be satisfied.

A Bible Commentary for English Readers, edited by Charles John Ellicott (1878–1897) — public domain. Text from a community e-Sword module.

15. And I will give] with Sam. and LXX B read he will give.

grass] rather, herbage (‘esĕb), including grass (dĕshĕ’); for cattle as here, Jer_14:6, Psa_106:20; but of human food, Gen_3:18.

shalt eat and be full] Deu_6:11 (q.v.), Deu_8:10; Deu_8:12 as here, with Sg.

The Cambridge Bible for Schools and Colleges (gen. ed. J. J. S. Perowne; Cambridge University Press, 1878–1918) — public domain. Text from a community e-Sword module.

Therefore shall ye lay up these my words in your heart, and in your soul,.... Treasure up the laws of God delivered to them in their minds, retain them in their memories, and cherish a cordial affection for them; which would be an antidote against apostasy, idolatry, and other sins, Psa 119:11.

and bind them for a sign upon your hand, that they may be as frontlets between your eyes; of this and the two following verses; see Gill on Deu 6:7; see Gill on Deu 6:8; see Gill on Deu 6:9.

John Gill's Exposition of the Whole Bible (1746–1763) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

Hay. Seed-grass was sown, like corn, in Palestine, as it is still in the Levant, where meadows are unknown. The hay consisted chiefly of trefoil, and was carried on beasts in long journeys, Genesis xliii. 27., and Judges xix. 19. Cattle fed commonly on straw and barley. The hay grass which grew on mountains was of a different sort, and used for pasturage, (Job xl. 15,) though it might also be cut, Proverbs xxvii. 25. (Calmet)

George Leo Haydock (1774–1849), Haydock's Catholic Family Bible and Commentary, 1859 edition — public domain. Excludes Psalms (Douay-Rheims chapter numbering differs from Protestant) and Deuterocanonical books (Catholic canon only).

I will send grass in thy fields - So godliness has here the promise of the life which now is. But the favour of God puts gladness into the heart, more than the increase of corn, wine and oil.

John Wesley, Explanatory Notes Upon the Whole Bible (1754–1765) — public domain. Text via the GEBible commentary corpus.

ונתתי עשב בשדך AND I WILL GIVE GRASS IN THY FIELD [FOR THY CATTLE] in thy field: so that you will not need to lead them to distant pasture grounds. Another explanation: it means that you will be able to cut your grain all the rainy season and cast it before thy cattle as fodder, and if you withdraw your hand from it (stop doing this) only thirty days before the harvest, it will not give you less of its corn than if you had not fed your cattle with it (as is implied by ואכלת ושבעת, you will eat to the full) (Sifrei Devarim 43:2).

ואכלת ושבעת AND THOU SHALT EAT AND BE SATISFIED — This is quite another (a separate) blessing; it means that a blessing will be on the bread within the stomach (see Rashi on Leviticus 25:19). השמרו לכם

Rashi on the Tanakh — English translations: “The Judaica Press complete Tanach with Rashi, translated by A. J. Rosenberg” (CC BY 4.0); “Pentateuch with Rashi's commentary by M. Rosenbaum and A.M. Silbermann, 1929-1934” (public domain); “The Metsudah Tanach series, Lakewood, N.J” (CC BY 4.0); and “The Book of Joshua, Metsudah Publications, 1997” (CC BY 4.0). Text via Sefaria.

AND THOU SHALT EAT AND BE SATISFIED. “This is another blessing, meaning that there will be a blessing on the bread within your stomach, and you eat and be satisfied.” This is Rashi’s language and Rabbi Abraham ibn Ezra commented: “And thou shalt eat and be satisfied. This refers back to thy corn, and thy wine, and thine oil [mentioned in the preceding verse], not to the grass in thy fields which is near [in the same verse].” The correct interpretation in my opinion is that it refers to everything: “and thou shalt eat and be satisfied with the corn, wine, and oil, and also the sheep and cattle [will eat and be satisfied with the grass in the field].” And in the Sifre we find: 43. “And thou shalt eat and be satisfied, when your cattle eats and is satisfied, it works the ground [with strength], and so it is said, and much increase is by the strength of the ox. Another interpretation: [And thou shalt eat and be satisfied] from the young [of the cattle]. Although there is no proof of this, yet there is an indication, for it says, And they shall come and sing in the height of Zion, and shall flow unto the goodness of the Eternal, to the corn, and to the wine, and to the oil, and to the young of the flock and of the herd etc.” This is the correct interpretation.

Ramban (Nachmanides) on the Tanakh — English translation: “Commentary on the Torah by Ramban (Nachmanides). Translated and annotated by Charles B. Chavel. New York, Shilo Pub. House, 1971-1976” (CC BY 4.0). Text via Sefaria.