coming after me, he will baptize you with the Holy Spirit and with fire.” Why fire? Because the descent of the Holy Spirit was in fiery tongues. Concerning this the Lord says with joy, “I have come to cast fire on the earth, and how I wish that it would be kindled!” Catechetical Lecture 17.8. The Mystery of the Trinity Present at Jesus’ Baptism. AMBROSE: Now let us consider the mystery of the Trinity. We say, “one God,” but we confess the Father, and we confess the Son. For although it is written,
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