The Hebrew word mezareh refers to a scattering or dispersing wind, particularly one used in the agricultural process of winnowing grain. It derives from the root zarah (H2219, to scatter, winnow) and describes the wind that separates the valuable grain from the worthless chaff on the threshing floor.
The imagery of winnowing is one of the most powerful metaphors for divine judgment in Scripture. Just as the farmer uses wind to separate grain from chaff, God uses trial and judgment to separate the righteous from the wicked. John the Baptist declared that the Messiah would come with His winnowing fork, gathering wheat into the barn and burning the chaff with unquenchable fire (Matthew 3:12). The scattering wind of mezareh thus points to the searching, purifying work of God that tests and refines His people.