Gregory the Great — on 1Cor 12:8 (Forty Gospel Homilies, Homily 30)

“Concerning this Spirit it is written: "His Spirit has adorned the heavens." For the ornaments of the heavens are the virtues of those who preach. Paul enumerates these ornaments, saying: "To one is given through the Spirit the word of wisdom, to another the word of knowledge according to the same Spirit, to another faith in the same Spirit, to another the grace of healing in one Spirit, to another the working of miracles, to another prophecy, to another the discernment of spirits, to another various kinds of tongues, to another the interpretation of speeches. But one and the same Spirit works all these things, distributing to each one individually as He wills." Therefore, as many as are the gifts of those who preach, so many are the ornaments of the heavens.”