ויהיו חיי שרה מאה שנה ועשרים שנה ושבע שנים
Rashi explains that the repetition of the word “years” divides the life of Sarah Imeinu into three periods, each with its own uniqueness. Each period, however, also shares a particular characteristic with its predecessor. Thus, at one hundred, she was as free of sin as a twenty-year old (a person does not suffer Heavenly punishment until age twenty), and at twenty she maintained the innocent, wholesome beauty of a seven-year-old. Rashi concludes, Kulan shavin l’tovah; “All of her years were equal in goodness.” Our Matriarch had a good life, in which each of her superior character traits synchronized with one…