To become new men means losing what we now call ‘ourselves’. Out of our selves, into Christ, we must go. His will is to become ours and we are to think His thoughts, to ‘have the mind of Christ’ as the Bible says. And if Christ is one, and if He is thus to be ‘in’ us all, shall we not be exactly the same? It certainly sounds like it; but in fact it is not so.This seems to me to be the perfect analogy. I myself, while living as a Christian, still sometimes have trouble visualizing things like "putting on Christ." This idea of "salt" has really sunk in and I think of it often.
... suppose a person who knew nothing about salt. You give him a pinch to taste and he experiences a particular strong, sharp taste. You then tell him that in your country people use salt in all their cookery. Might he not reply ‘In that case I suppose all your dishes taste exactly the same: because the taste of that stuff you have just given me is so strong that it will kill the taste of everything else.’ But you and I know that the real effect of salt is exactly the opposite. So far from killing the taste of the egg and the tripe and the cabbage, it actually brings it out. They do not show their real taste till you have added the salt.
C.S. Lewis, Mere Christianity