Please define this "long time" phrase.
P.S. Contra Celsum, written in 248 C.E. (some 800 years before Rashi):
I remember that once in a discussion with some whom the Jews regard as learned I used these prophecies [Isaiah 52:13-53:8]. At this the Jew said that these prophecies referred to the whole people as though of a single individual, since they were scattered in the dispersion and smitten, that as a result of the scattering of the Jews among the other nations many might become proselytes. In this way he explained the text: "Thy form shall be inglorious among men"; and "those to whom he was not proclaimed shall see him"; "being a man in calamity." (Origen, Contra Celsum, trans. Henry Chadwick, Cambridge: Cambridge University Press, Book 1.55, 1965, p. 50)