The conviction on which sacramental theology rests is nowhere better expressed than by St. Leo the Great in his sermon on the Ascension: after Jesus ascended into heaven, what was visible in his earthly life has passed over into the sacraments.
At Easter, beloved brethren, it was the Lord’s resurrection which was the cause of our joy; our present rejoicing is on account of his ascension into heaven. With all due solemnity we are commemorating that day on which our poor human nature was carried up, in Christ, above all the hosts of heaven, above all the ranks of angels, beyond the highest heavenly powers to the very throne of God the Father…
And so our Redeemer’s visible presence has passed into the sacraments…
The truth is that the Son of Man was revealed as Son of God in a more perfect and transcendent way once he had entered into his Father’s glory; he now began to be indescribably more present in his divinity to those from whom he was further removed in his humanity…
Leo the Great, Sermo 2 de Ascensione, Office of Readings, Friday of the Sixth Week of Easter
Tony Lusvardi, S.J. 