Verses with the word harvestman in the Old Testament (2 verses):

Isaiah 17:5
And it shall be as when the harvestman gathereth the corn, and reapeth the ears with his arm; and it shall be as he that gathereth ears in the valley of Rephaim.

Jeremiah 9:22
Speak, Thus saith the LORD, Even the carcases of men shall fall as dung upon the open field, and as the handful after the harvestman, and none shall gather them.