Sieve

Boyd’s Bible Dictionary:

Ancient sieves, or sifters, were crudely made of rushes, though the Gauls are credited with their manufacture from horsehair
They were used for separating the flour from the bran, or broken kernels, and what was left in the sieve was thrown back into the mill to be reground (Isa. 30:28).

From Manners and Customs of the Bible:

Amos 9: 9. I will sift the house of Israel among all nations, like as corn is sifted in a sieve.
A part of the process of winnowing grain consisted in the use of a sieve, by which means the particles of earth, and other impurities which clung to the corn during the process of threshing, were separated from the grain. In addition to this text, reference is figuratively made to the sieve in Isaiah 30:28, and Luke 22:31. See also note on Ruth 3:2 (#243) and on Matthew 3:12 (#634).

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