What is the meaning of Matthew 3:12?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

His winnowing fork is in His hand to clear His threshing floor and to gather His wheat into the barn; but He will burn up the chaff with unquenchable fire.”

Berean Standard Bible (BSB)

His winnowing fork is in his hand, and he will thoroughly cleanse his threshing floor. He will gather his wheat into the barn, but the chaff he will burn up with unquenchable fire.”

World English Bible (WEB)

Whose{G3739} fan{G4425} is in{G1722} his{G846} hand{G5495}, and{G2532} he will throughly purge{G1245}{(G5692)} his{G846} floor{G257}, and{G2532} gather{G4863}{(G5692)} his{G846} wheat{G4621} into{G1519} the garner{G596}; but{G1161} he will burn up{G2618}{(G5692)} the chaff{G892} with unquenchable{G762} fire{G4442}.

Strong's King James

(12) His winnowing fork in His hand cleaning out His threshing floor, gathering His wheat into the barn but burning up the chaff with unquenchable fire.

The F.O.G*

[12] He comes ready for harvest, winnowing fork in hand. He'll thoroughly separate the wheat from the chaff on His threshing floor. The valuable grain He'll gather into His barn, but the worthless chaff He'll burn with unquenchable fire. His coming means both salvation and judgment."

The F.O.G Paraphrase

whose fan is in his hand, and he will thoroughly cleanse his floor, and will gather his wheat to the storehouse, but the chaff he will burn with fire unquenchable.’

Young's Literal Translation