Bede the Venerable
Catena Aurea · Lukasevangelium 3
And as the people were in expectation, and all men mused in their hearts of John, whether he were the Christ, or not; John answered, saying unto them all, I indeed baptize you with water; but one mightier than I cometh, the latchet of whose shoes I am not worthy to unloose: he shall baptize you with the Holy Ghost and with fire. Whose fan is in his hand, and he will throughly purge his floor, and will gather the wheat into his garner; but the chaff he will burn with fire unquenchable.
For by the floor is represented the present Church, in which many are called but few are chosen. The purging of which floor is even now carried on individually, when every perverse offender is either cast out of the Church for his open sins, (by the hands of the Priesthood,) or for his secret sins is after death condemned by Divine judgment. And at the end of the world it will be accomplished universally, when the Son of Man shall send His angels, and they shall gather out of His kingdom every thing that has offended.