Excerpt from C.S. Lewis, Mere Christianity, Book IV, Chapter 5
Human beings are not [separate from each other]. They look separate because you see them walking about separately. But then, we are so made that we can see only the present moment. If we could see the past, then of course it would look different. For there was a time when every man was a part of his mother, and (earlier still) part of his father as well: and when they were part of their grandparents.
If you could see humanity spread out in time, as God sees it, it would not look like a lot of separate things dotted about. It would look like one single growing thing – rather like a very complicated tree. Every individual would appear connected with every other. And not only that. Individuals are not really separate from God any more than from one another. Every man, woman, and child all over the world is feeling and breathing at this moment only because God, so to speak, is ‘keeping him going’.
Consequently, when Christ becomes man it is not really as if you could become one particular tin soldier. It is as if something which is always affecting the whole human mass begins, at one point, to affect that whole human mass in a new way. From that point the effect spreads through all mankind. It makes a difference to people whole lived before Christ as well as to people who lived after Him. It makes a difference to people who have never heard of Him. It is like dropping into a glass of water one drop of something which gives a new taste or a new color to the whole lot.
What, then, is the difference which He has made to the whole human mass? It is just this; that the business of becoming a son of God, of being turned from a created thing into a begotten thing, of passing over from the temporary biological life into timeless ‘spiritual’ life, has been done for us. Humanity is already ‘saved’ in principle. We individuals have to appropriate that salvation. But the really tough work – the bit we could not have done for ourselves – has been done for us. We have not got to try to climb up into spiritual life by our own efforts; it has already come down into the human race. If we will only lay ourselves open to the one Man in whom it was fully present, and who, in spite of being God, is also a real man, He will do it in us and for us…
One of our own race has this new life: if we get close enough to him we shall catch it from Him.
