'Gleaned' in the Bible

So she went out, proceeded to the field, and gleaned behind the harvesters. And it happened that she came to the portion of land belonging to Boaz, of the family of Elimelech.

Her mother-in-law noticed how much Ruth had gleaned and had brought back from what was left over from her lunch. So her mother-in-law quizzed her, "Where did you glean today? Where, precisely, did you work? May the one who took notice of you be blessed." So Ruth told her mother-in-law with whom she had worked. She said, "The man's name with whom I worked today is Boaz."

"I found Israel, as one finds grapes in the wilderness; Your ancestors seemed to me like the fruit gleaned from a fig tree's first harvest. When they went to Baal-peor, they devoted themselves to that filth, and they became loathsome, like what they loved.

"If thieves came against you, if marauding gangs by night Oh, how you will be destroyed! Would they not steal only until they had enough? If grape pickers came to you, would they not leave some grapes to be gleaned?