Will we fully comprehend mysteries like the Trinity in heaven, or will they remain forever a mystery?
Robert Sungenis answers that he believes we will contemplate the Trinity in the beatific vision forever without ever plumbing its depths, understanding it better and better but never completely. He calls this a joy in itself, since a God we can never exhaust is the very reason we worship Him, and says the same holds for the Incarnation.
A viewer notes we cannot comprehend some things now, like the Trinity or how free will and predestination fit together, and asks whether we will comprehend them in heaven or whether they will remain forever a mystery.
Answer
That is a question I cannot fully answer, but here is what I really think: we will forever be viewing the beatific vision to understand what the Trinity is, and we will never plumb its depths. That is a joy in itself. Imagine having a God so great that you can contemplate him for an eternity and still never reach the end of who he is; that is the very reason we worship him, because he is so far above us. So you might understand it better and better, but still not completely. I was recently discussing the nature of the Incarnation with a friend, and the deeper you dissect it, one person with two natures, a divine nature that cannot suffer or die and a human nature that can, the more you realize this is a combination we can plumb forever and still not know exactly how it all fits together.