On the passage from, "His winnowing fan is in his hand, and he will cleanse his threshing floor," up to the point where it says, "And he will gather the grain into his barn."
GOD IS SPIRIT, and those who worship him should worship in spirit and in truth."1. Our God is also "a consuming fire."2. Therefore, God is called by two names: "spirit" and "fire." To the just he is spirit; to sinners he is fire. But the angels are also called "spirit" and "fire." Scripture says, "He makes his angels spirits and his servants a burning fire."3. To those who are saints, the angels are spirits; but to those who deserve punishment, they administer fire and burning. In this sense, our Lord and Savior, because he is spirit, also "came to cast fire upon the earth."4. He is "spirit" according to the passages where Scripture says, "Butwhen you have been converted to the Lord, the veil will be taken away,"5. and, "The Lord is spirit."6.
2. But "he came to cast fire" not upon the heavens, but "upon the earth." He himself shows that when he says, "I have come to cast fire upon the earth, and how I wish it were already burning."7. For, if "you are converted to the Lord," who is spirit, Christ will be spirit for you, and has not "come to cast fire upon the earth." But, if you are not converted to him but cling to the earth and its fruits, "he comes to cast fire" upon the earth. Scripture also says something like this about God: "The fire of____________________