Deuteronomy 28:33 KJV
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:
Deuteronomy 28:33, King James Version
In context
32 Thy sons and thy daughters shall be given unto another people, and thine eyes shall look, and fail with longing for them all the day long: and there shall be no might in thine hand.
33 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:
34 So that thou shalt be mad for the sight of thine eyes which thou shalt see.