Now the depth and glow of Paul’s faith and love goes clearly back to his conversion, an event which colours and influences all his feeling and teaching for some thirty-four years, up to the end. And similarly Catherine’s conversion-experience has been found by us to determine the sequence and all the chief points of her Purgatorial teaching, some thirty-seven years after that supreme event. Already Philo had, under Platonic influence, believed in an Ideal Man, a Heavenly Man; had identified him with the Logos, the Word or Wisdom of God; and had held him to be in some way ethereal and luminous,--never arriving at either a definitely personal or a simply impersonal conception of this at one time intermediate Being, at another time this supreme attribute of God. St. Paul, under the profound impression of the Historic Christ and the great experience on the road to Damascus, perceives the Risen, Heavenly Jesus as possessed of a luminous, ethereal body, a body of “glory,” Acts xxii, 11. And this Christ is, for St. Paul, identical with “the Spirit”: “the Lord is the Spirit,” 2 Cor. iii, 17; and “to be in Christ” and “Christ is in us” are parallel terms to those of “to be in the Spirit” and “the Spirit is within us” respectively. In all four cases we get Christ or the Spirit conceived as an element, as it were an ocean of ethereal light, in which souls are plunged and which penetrates them. In Catherine we have, at her conversion, this same perception and conception of Spirit as an ethereal light, and of Christ as Spirit; and up to the end she more and more appears to herself to bathe, to be submerged in, an ocean of light, which, at the same time, fills her within and penetrates her through and through.