To glean is to gather the leftover food after or during the harvest of grain, grapes, etc. Under the Mosaic Law the landowner was required to leave certain areas of the field unharvested so that the poor and needy could come in and gather grain, grapes, and olives. This is called gleaning.
- Lev. 19:9-10, “Now when you reap the harvest of your land, you shall not reap to the very corners of your field, nor shall you gather the gleanings of your harvest. 10 ‘Nor shall you glean your vineyard, nor shall you gather the fallen fruit of your vineyard; you shall leave them for the needy and for the stranger. I am the Lord your God.”
- Leviticus 23:22, "When you reap the harvest of your land, moreover, you shall not reap to the very corners of your field nor gather the gleaning of your harvest; you are to leave them for the needy and the alien. I am the Lord your God."
- Deuteronomy 24:19-21, "When you reap your harvest in your field and have forgotten a sheaf in the field, you shall not go back to get it; it shall be for the alien, for the orphan, and for the widow, in order that the Lord your God may bless you in all the work of your hands. 20 When you beat your olive tree, you shall not go over the boughs again; it shall be for the alien, for the orphan, and for the widow. 21 When you gather the grapes of your vineyard, you shall not go over it again; it shall be for the alien, for the orphan, and for the widow."
- Ruth 2:2-3, “And Ruth the Moabitess said to Naomi, “Please let me go to the field and glean among the ears of grain after one in whose sight I may find favor.” And she said to her, “Go, my daughter.” 3 So she departed and went and gleaned in the field after the reapers; and she happened to come to the portion of the field belonging to Boaz, who was of the family of Elimelech."