Read Deuteronomy 28:33 Using Other Translations
The fruit of thy land, and all thy labours, shall a nation which thou knowest not eat up; and thou shalt be only oppressed and crushed alway:
A nation that you have not known shall eat up the fruit of your ground and of all your labors, and you shall be only oppressed and crushed continually,
A foreign nation you have never heard about will eat the crops you worked so hard to grow. You will suffer under constant oppression and harsh treatment.