There are three things that spread the Christ-life to us: baptism, belief, and that mysterious action which different Christians call by different names—Holy Communion, the Mass, the Lord’s Supper. At least, those are the three ordinary methods. I am not saying there may not be special cases where it is spread without one or more of these. I have not time to go into special cases, and I do not know enough. If you are trying in a few minutes to tell a man how to get to Edinburgh you will tell him the trains: he can, it is true, get there by boat or by a plane, hut you will hardly bring that in. And I am not saying anything about which of these three things is the most essential. My Methodist friend would like me to say more about belief and less (in proportion) about the other two. But I am not going into that. Anyone who professes to teach you Christian doctrine will, in fact, tell you to use all three, and that is enough for our present purpose.
Quotes from Mere Christianity, Part 26
C.S. Lewis, Mere Christianity (1952; Harper Collins: 2001) 61.