Perudah (פְּרוּדָה) refers to a single seed or grain kernel — something that has been separated out, divided off from the whole. The root parad means to divide or separate, and perudah captures the individual unit — one seed among many. This word appears in Isaiah 27 in a remarkable agricultural and theological image of how God deals with His people.
In Isaiah 27:8, God is described as threshing Israel — but not with a heavy, crushing blow; He measures carefully, as one separates perudah by perudah. This pictures divine discipline as precise and individual, not wholesale destruction. Each soul matters; God does not thresh carelessly. This connects to Jesus' teaching that God numbers even the hairs of our heads — individual, careful, covenantal attention to each person.
The image of God threshing grain with precision — handling each perudah carefully — is a comfort against the fear that divine judgment is indiscriminate. God is not a wrecking ball; He is a careful thresher, separating what is useful from what is not, and not wasting a single kernel. This precision of divine action is a recurring biblical theme: the remnant is never accidental but carefully preserved.