Adam Clarke on Deuteronomy 28:29

Thou shalt be only oppressed, etc. - Perhaps no people under the sun have been more oppressed and spoiled than the rebellious Jews. Indeed, this has been their portion, with but little intermission, for nearly 1,800 years. And still they grope at noon day, as the blind gropeth in darkness - they do not yet discover, notwithstanding the effulgence of the light by which they are encompassed, that the rejection of their own Messiah is the cause of all their calamities.