Deuteronomy 24:21

21 And when thou shalt have reaped corn in thy field, and shalt have forgotten a sheaf in thy field, thou shalt not return to take it; it shall be for the stranger, and the orphan, and the widow, that the Lord thy God may bless thee in all the works of thy hands.

Deuteronomy 24:21 Meaning and Commentary

Deuteronomy 24:21

When thou gatherest the grapes of thy vineyard
Which was done much about the same time that the olives were gathered, and both after wheat harvest, about the latter end of June, or beginning of July; for they were more forward in those hot countries:

thou shall not glean [it] afterwards;
go over the vines a second time, to pick off every berry or bunch that escaped them at first gathering:

it shall be for the stranger, for the fatherless, and for the widow;
as the forgotten sheaf, and the olive berries left; these are all supposed to be poor persons, otherwise no doubt there were strangers, and fatherless persons, and widows, in good circumstances; who, as they needed not, so neither would give themselves the trouble, but think it beneath them to go into fields, oliveyards, and vineyards, to gather what was left by the owners. These laws were made in favour of the poor, that mercy and kindness might be showed to them, and that they might have a taste of all the fruits of the earth.

Deuteronomy 24:21 In-Context

19 Thou shalt not wrest the judgment of the stranger and the fatherless, and widow; thou shalt not take the widow's garment for a pledge.
20 And thou shalt remember that thou wast a bondman in the land of Egypt, and the Lord thy God redeemed thee from thence; therefore I charge thee to do this thing.
21 And when thou shalt have reaped corn in thy field, and shalt have forgotten a sheaf in thy field, thou shalt not return to take it; it shall be for the stranger, and the orphan, and the widow, that the Lord thy God may bless thee in all the works of thy hands.
22 And if thou shouldest gather thine olives, thou shalt not return to collect the remainder; it shall be for the stranger, and the fatherless, and the widow, and thou shalt remember that thou wast a bondman in the land of Egypt; therefore I command thee to do this thing.
23 And when soever thou shalt gather the grapes of thy vineyard, thou shalt not glean what thou hast left; it shall be for the stranger, and the orphan, and the widow:

The Brenton translation of the Septuagint is in the public domain.