Is not Boaz our relative, with whose young women you were? See, he is winnowing barley tonight at the threshing floor.
Here is, I. Naomi's care for her daughter's comfort is without doubt very commendable, and is recorded for imitation. She had no thoughts of marrying herself, Rut 1:12. But, though she that was old had resolved upon a perpetual widowhood, yet she was far from the thoughts of confining her daughter-in-law to it, that was young. Age must not make itself a standard to youth.
Commenting on Ruth 3:1-5
And now is not Boaz of our kindred, with whose maidens thou wast?.... He was, and her question supposes and concludes it, and which she observes, that Ruth might take notice of it, and encouragement from it; and the rather, since she had been admitted into the company and conversation of his maidens; and which was more, though not mentioned, into the company and conversation...
He winnoweth barley tonight - It is very likely that the winnowing of grain was effected by taking up, in a broad thin vessel or sieve, a portion of the corn, and letting it down slowly in the wind; thus the grain would, by its own weight, fall in one place, while the chaff, etc., would be carried to a distance by the wind.