On the next day, the multitude that stood on the other side of the sea saw that there was no other boat there, except the one in which his disciples had embarked, and that Jesus hadn't entered with his disciples into the boat, but his disciples had gone away alone.

 Here we come upon a truth that re-emerges in every age. Time and again it is not the intellectual difficulty which keeps men from becoming Christians; it is the height of Christ's moral demand. At the heart of an religion there must be mystery, for the simple reason that at that heart there is God. In the nature of things man cannot ever fully understand God. Any honest thinker will accept that there must be mystery. 