Luke 22:31-35

Questions

What is the difference between Satan's "sift you as wheat" (Luke 22:31) and the Lord's "purge them as gold and silver" (Mal 3:3)? That is, what is the difference between Satan's sieve and the refiner's fire? (See also: Isa. 48:10, Mal. 3:2, Zech. 13:9, D&C 128:24).
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In verse 31, “you” (hymas) is plural. Thus, “Satan hath desired to have [you all].”
In verse 32, “thee,” “thy,” and “thou” (sou, sou, and sy) are singular. Thus, “I have prayed for thee [Peter],” etc.
In verse 31, the root of “sift” (siniazō) is “sieve” (sinion), possibly implying a distinction between winnowing (tossing grain such that wind carries away light contaminants, i.e., chaff) and sifting (agitating grain through a sieve to separate out larger contaminants too heavy to be removed by winnowing).
In verse 31, “hath desired to have you” comes from ‘’exaiteō’’, which means “to ask that one be given up to one from the power of another” (Thayer’s Lexicon).
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