14 I know that everything God does will endure forever; nothing can be added to it and nothing taken from it. God does it so that men will revere him. 15 Whatever is has already been, and what will be has been before; and God will call the past to account. Ecc. 3:14-15
The rightful demand that all reality should be consistent and systematic does not therefore exclude miracles: but it has a very valuable contribution to make to our conception of them. It reminds us that miracles, if they occur, must, like all events, be revelations of that total harmony of all that exists. Nothing arbitrary, nothing simply "stuck on" and left unreconciled with the texture of total reality, can be admitted. By definition, miracles must of course interrupt the usual course of Nature; but if they are real they must, in the very act of so doing, assert all the more the unity and self-consistency of total reality at some deeper level. ... In calling them miracles we do not mean that they are contradictions or outrages; we mean that, left to her [Nature] own resources, she could never produce them." C.S. Lewis
C.S. Lewis called the incarnation "the Grand Miracle." He wrote: "The central miracle asserted by Christians is the Incarnation.... Every other miracle prepares for this, or exhibits this, or results from this.... It was the central event in the history of the Earth--the very thing that the whole story has been about" (Miracles, chapter 14).