“Unconverted man lives in the visible world judging all that is or may be by tradition’s experience and by the rules of logic. But when he encounters Christ , he must either accept him and his revolutionary approach to truth or lose him. If he attempts to judge also the Lord by the standards of common experience, he will soon notice that he is dealing with something outside experience. He will have to discard t he norms of the past and take Christ as his new point of departure. When he no longer attempts to subject Christ to the norms of immediate reason and experience, he will recognize Him as the supreme measure of all possible reality. The intellect, jealous for its own sovereignty rejects such recognition, which would put an end to its world-anchored self-glorification, and surrender it into the hands of the God of Revelation. This is the “risk’ any would-be Christian must take. If he takes it, a profound revolution begins. It may take a disquieting, even frightening form: may demand passage through stifling darkness and perplexity. All that until now has seemed certain suddenly becomes questionable. The whole conception of reality, the whole idea of existence is turned upside-down. Only the haunting question persists: Is Christ really so great that he can be the norm of all that is? Does the world really lose itself in him, or is the whole idea only another (magnificent) example of the human tendency to make that which it reveres the measure of all things; another proof of the blindness inherent in all love? Yet the longer the intellect continues to grope, the clearer it becomes that the love of Christ is essentially different from every other love. And to the degree that the searching individual experiences such spiritual revolution, he gains an amplitude, a superiority, a synthesizing power of reason that no natural insight can match.”
To corroborate this. Consider Ratzinger’s knowing Christ is achievable only by praying with Christ as in his “Behold the Pierced One” Ignatius (1986) 25-27. That is, “like is known by like” – Christ being relation to the Father and appearing as prayer in St. Luke.
 R. Guardini, “The Lord,” 538-540. Disturbingly, I cannot find these pages in my copy of The Lord.