'Thresh' in the Bible

In that day the Lord will thresh [out His grain] from the flowing stream of the River [Euphrates] to the Brook of Egypt, and you will be gathered up one by one, O sons of Israel.

Bread grain is crushed fine,Indeed, the farmer does not continue to thresh it forever.Because the wheel of his cart and his horses eventually damage it,He does not thresh it longer.

“In fact, I have made of you a new, sharp threshing implement with sharp edges;You will thresh the mountains and crush them,And make the hills like chaff.