Jerome — as excerpted in the Catena Aurea on Matthew 3:11-12

“Either the Holy Ghost Himself is a fire, as we learn from the Acts, when there sat as it were fire on the tongues of the believers; and thus the word of the Lord was fulfilled who said, I am come to send fire on the earth, I will that it burn. (Luke 12:49.) Or, we are baptized now with the Spirit, hereafter with fire; as the Apostle speaks, Fire shall try every man’s work, of what sort it ise. (1 Cor. 3:13.)”