On the purely human level people discipline themselves to climb mountains and when they reach the mountain-top the views are magnificent, breathtaking, up there it is delight, enjoyment, peace, it is spiritual experience.
But it is not necessarily Christian spiritual experience, it is human spiritual experience.
Christian spiritual experience is something more, more than the views from the mountain-top and how that touches us.
In the Gospel today it is not the surrounding views that the disciples are caught up in, that’s not what is remembered. In fact there is no mention of it.
No, it is spiritual experience of a different kind that they remember. It is something more, something beyond purely human spiritual experience. It is Heaven thrown open and it is the presence of Jesus Christ that is opening Heaven up.
It is Heaven, grace, God, acting on human effort and taking human spiritual experience to another level altogether.