XXV.
John says: "I indeed baptize you with water, but there cometh after me He that baptizeth with the Spirit and fire." 1 But He baptized no one with fire. But some, as Heraclius says, marked with fire the ears of those who were sealed; understanding so the apostolic saying, "For His fan is in His hand, to purge His floor: and He will gather the wheat into the garner; but the chaff He will burn with fire unquenchable." 2 There is joined, then, the expression "by fire" to that "by the Spirit;" since He separates the wheat from the chaff, that is, from the material husk, by the Spirit; and the chaff is separated, being fanned by the wind: 3 so also the Spirit possesses a power of separating material forces. Since, then, some things are produced from what is unproduced and indestructible,--that is, the germs of life,--the wheat also is stored, and the material part, as long as it is conjoined with the superior part, remains; when separated from it, it is destroyed; for it had its existence in another thing. This separating element, then, is the Spirit, and the destroying element is the fire: and material fire is to be understood. But since that which is saved is like wheat, and that which grows in the soul like chaff, and the one is incorporeal, and that which is separated is material; to the incorporeal He opposes spirit, which is rarefied and pure--almost more so than mind; and to the material He opposes fire, not as being evil or bad, but as strong and capable of cleansing away evil. For fire is conceived as a good force and powerful, destructive of what is baser, and conservative of what is better. Wherefore this fire is by the prophets called wise.
