Bonaventure, on Ps 73:12

“But God is our king before ages: he hath wrought salvation in the midst of the earth.”

“Christ was such a Center in His crucifixion. "God is our king before ages; He has wrought salvation in the midst of the earth." The earth is clearly the center, and hence it is the lowest, and of modest size; and because the lowest and of modest size, it receives all the heavenly influences, and brings forth a marvelous multiplication of beings. Likewise the Son of God, the very small and poor and humble One, assuming our earth, and made of earth, not only came upon the surface of the earth, but indeed to the depth of its center, that is, "He has wrought salvation in the midst of the earth," for after His crucifixion, His soul went down into hell and re-established the heavenly thrones. Such a Center has a saving power: and anyone who draws away from it is condemned, as drawing away from the means of humility. In such a center "He has wrought salvation," that is, in the humility of the cross.”

Imported from an open dataset — not yet checked against the printed edition.