Deuteronomy 28:47-50

47Because thou servedst not Jehovah thy God with joyfulness, and with gladness of heart, by reason of the abundance of all things; 48therefore shalt thou serve thine enemies that Jehovah shall send against thee, in hunger, and in thirst, and in nakedness, and in want of all things: and he shall put a yoke of iron upon thy neck, until he have destroyed thee. 49Jehovah will bring a nation against thee from far, from the end of the earth, as the eagle flieth; a nation whose tongue thou shalt not understand; 50a nation of fierce countenance, that shall not regard the person of the old, nor show favor to the young,