
Hilary of Poitiers
Catena Aurea · Matthäusevangelium 3
I indeed baptize you with water unto repentance: but He that cometh after me is mightier than I, Whose shoes I am not worthy to bear: 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 gather His wheat into the garner; but He will burn up the chaff with unquenchable fire.
The wheat, i. e. the full and perfect fruit of the believer, he declares, shall be laid up in heavenly barns; by the chaff he means the emptiness of the unfruitful.