Deuteronomy 28:47-49 (King James Version)
47Because thou servedst not the LORD thy God with joyfulness, and with gladness of heart, for the abundance of all things;
48Therefore shalt thou serve thine enemies which the LORD 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.
49The LORD shall bring a nation against thee from far, from the end of the earth,
as swift as the eagle flieth;
a nation whose tongue thou shalt not understand;
(the son and daughters of slaves)
as swift as an eagle
a yoke of iron upou thy neck