The Person of Jesus Christ is Revelation. Therefore, the act of faith is "Personal" as receptive self-gift.
“Under the ancient law prophets and priests sought from God revelations and visions which indeed they needed, for faith had as yet no firm foundation and the gospel law had not yet been established. Their seeking and God’s responses were necessary. He spoke to them at one time through words and visions and revelations, at another in signs and symbols. But however he responded and what he said and revealed were mysteries of our holy faith, either partial glimpses of the whole or sure movements toward it.
“But now that faith is rooted in Christ, and the law of the gospel has been proclaimed in this time of grace, there is no need to seek him in the former manner, nor for him so to respond. By giving us, as he did, his son, his only Word, he has in that one Word said everything. There is no need for any further revelation.
“This is the true meaning of Paul’s words to the Hebrews when he urged them to abandon their earlier ways of conversing with God., as laid down in the law of Moses, and to set their eyes on Christ alone: In the past God spoke to our fathers through the prophets in various ways and manners; but now in our times, the last days, he has spoken to us in his son. In effect, Paul is saying that God has spoken so completely through his own Word that he chooses to add nothing. Although he had spoken but partially through the prophets he has now said everything in Christ. He has given us everything, his own son.
“Therefore, anyone who wished to question God or to seek some new vision or revelation from him would commit an offense, for instead of focusing his eyes entirely on Christ he would be desiring something other than Christ, or beyond him.
“God could then answer: This is my beloved son in whom I am well pleased: hear him. In my Word I have already said everything. Fix your eyes on him alone for in him I have revealed all and in him you will find more than you could ever ask for or desire.
“I, with my Holy Spirit, came down upon him on Mount Tabor and declared: This is my beloved Son in whom I am well pleased: hear him. You do not need new teachings or ways of learning from me, for when I spoke before it was of Christ who was to come, and when they sought anything of me they were but seeking and hoping for the Christ in whom is every good, as the whole teaching of the evangelists and apostles clearly testifies.”
The Ascent of Mount Carmel Book 2, Chapter 22.
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Today’s reading (December 14) from a spiritual canticle by St. John of the Cross is a development of the above: Only suffering for love yields this knowledge:
“Though holy doctors have uncovered many mysteries and wonders, and devout souls have understood them in this earthly condition of ours, yet the greater part still remains to be unfolded by them, and even to be understood by them.
“We must then dig deeply in Christ. He is like a rich mine with many pockets containing treasures: however deep we dig we will never find their end or their limit. Indeed, in every pocket new seams of fresh riches are discovered on all sides.
“For this reason the apostle Paul said of Christ: In him are hidden all the treasures of the wisdom and knowledge of God. The soul cannot enter into these treasures, nor attain them, un less it first crossers into and enters the thicket of suffering, enduring interior and exterior labors, and unless it first receives from God very many blessings in the intellect and in the senses, and has undergone long spiritual training.
“All these are lesser things, disposing the soul for the lofty sanctuary of the knowledge of the mysteries of Christ: this is the highest wisdom attainable in this life.
“Would that men might come at last to see that it is quite impossible to reach the thicket of the riches and wisdom of God except by first entering the thicket of much suffering, in such a way that the soul finds there its consolation and desire. The soul that longs for divine wisdom chooses first, and in truth, to enter the thicket of the cross.
“Saint Paul therefore urges the Ephesians not to grow weary in the midst of tribulations, but to be rooted and grounded in love, so that they may know with all the saints the breadth, the length, the height and the depth – to know what is beyond knowledge, the love of Christ, so as to be filled with all the fullness of God.
“The gate that gives entry into these riches of his wisdom is the cross; because it is a narrow gate, while many seek the joys that can be gained through it, it is given to few to desire to pass through it.