10 And he said, Blessed be thou of the LORD, my daughter: for thou hast shewed more kindness in the latter end than at the beginning, inasmuch as thou followedst not young men, whether poor or rich.
He praised Ruth’s deed and, moreover, he did not betray temperance, but he kept to the law of nuptial congress. “You show by your deed,” he said, “that this was not done out of voluptuousness. In fact, you might have gone to those who are young and blooming, with only the intent of enjoying voluptuousness, but you went to the man who stands in place of a father to you.” Twice indeed, he calls her daughter.
Thy latter kindness: to thy husband deceased in seeking to keep up his name and family by marrying his relation according to the law, and not following after young men. For Booz, it seems, was then in years.
[AD 458] Theodoret of Cyrus on Ruth 3:10