The LORD hath sworn by his right hand, and by the arm of his strength, Surely I will no more give thy corn to be meat for thine enemies; and the sons of the stranger shall not drink thy wine, for the which thou hast laboured:
The Lord hath sworn by his right hand - His mighty instrument of accomplishing His will (cf. Isaiah 45:23; Hebrews 6:13).
Surely I will no more give thy grain (to be) meat for thine enemies; and the sons of the stranger shall not drink thy wine - Foreigners shall no more rob thee of the fruit of thy labours (cf. Isaiah 65:21-22).