C. S. Lewis once said that the most frequently spoken word in heaven would be, "OH." As in, "Oh, now I understand." Or, "Oh, now I see what God's plan was." Or, "Oh, now I see the reason for the trial I went through."

We do not have that luxury in this world. We walk by faith, not by knowledge. But one day it will be revealed to us. We will be in the presence of the Father and the Son and the Spirit. How can we be in the presence of all three at the same time? It beats me, but as St. Paul says in another place, "I know whom I have believed and I am persuaded that He is able to guard until that Day what has been entrusted to me."