Deuteronomy 23:24-25
24 When thou comest into thy neighbour's vineyard, then thou mayest eat grapes thy fill at thine own pleasure; but thou shalt not put any in thy vessel.
25 When thou comest into the standing corn of thy neighbour, then thou mayest pluck the ears with thine hand; but thou shalt not move a sickle unto thy neighbour's standing corn.
Allowance is here given, when they passed through a cornfield or vineyard, to pluck and eat of the corn or grapes that grew by the road-side, whether it was done for necessity or delight, only they must carry none away with them, v. 24-25. Therefore the disciples were not censured for plucking the ears of corn (it was well enough known that the law allowed it), but for doing it on the sabbath day, which the tradition of the elders had forbidden. Now,
This law intimated to them what a great plenty of corn and wine they should have in Canaan, so much that a little would not be missed out of their fruits: they should have enough for themselves and all their friends.
It provided for the support of poor travellers, to relieve the fatigue of their journey, and teaches us to be kind to such. The Jews say, “This law was chiefly intended in favour of labourers, who were employed in gathering in their harvest and vintage; their mouths must not be muzzled any more than that of the ox when he treads out the corn.”
It teaches us not to insist upon property in a small matter, of which it is easy to say, What is that between me and thee? It was true the grapes which the passenger ate were none of his own, nor did the proprietor give them to him; but the thing was of so small value that he had reason to think were he present, he would not deny them to him, anymore than he himself would grudge the like courtesy, and therefore it was no theft to take them.
It used them to hospitality, and teaches us to be ready to distribute, willing to communicate, and not to think every thing lost that is given away. Yet,
It forbids us to abuse the kindness of our friends, and to take the advantage of fair concessions to make unreasonable encroachments: we must not draw an ell from those that give but an inch. They may eat of their neighbour’s grapes; but it does not therefore follow that they may carry away.
Mathew Henry (1662-1714)