Book Four, Chapter 4: Good Infection

Reading: Book Four, Chapter 4 (Good Infection). Then read John 15:1-11 slowly.

Most of us come at knowing God the way we come at a school subject. Collect the facts, get them straight, pass the test. Facts matter. But Lewis's chapter describes the eternal relationship of Father and Son, pictures the Trinity as a dance, and portrays knowing God as catching a good infection. Taken together, those images say that knowing God is less like mastering a topic and more like being exposed to something alive that spreads.

Jesus reaches for a garden picture. “I am the true vine, and my Father is the vinedresser.” Before you appear in the scene, the Father and the Son are already in it, one tending and one the source of life. Then comes a line that carries the weight of the passage: “As the Father has loved me, so have I loved you. Abide in my love.” The love between Father and Son is not kept inside. Jesus says it reaches the disciples. Lewis's dance picture gives a feel for this. It is not a still diagram of three figures but something moving. Jesus' words say that movement is meant to reach you.

The word “abide” is an ordinary one. It means to stay, to remain, to make your home somewhere. Jesus uses it again and again in these verses. “As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me.” This is the good infection in garden terms. A branch does not strain to produce life. It stays connected to the place where the life already is.

So how do you stay connected? The passage names at least two ways.

First, his words. “Already you are clean because of the word that I have spoken to you,” Jesus says, and later, “If you abide in me, and my words abide in you.” Scripture is one of the main ways his words stay in you. A branch that keeps its distance from the vine is not trying hard enough at nothing. It is just apart.

Second, other people. Jesus says, “you are the branches,” and he is speaking to a group of disciples. One vine, many branches. Nobody catches this life in a sealed room. The people already carrying it are one of the ways it reaches you, and you are one of the ways it reaches them.

The passage is not all soft. Jesus talks about pruning and about branches that do not bear fruit. But he tells you why he is saying all of it: “These things I have spoken to you, that my joy may be in you, and that your joy may be full.” The aim is shared joy, not nervous performance.

So take one small step this week. Not a new system. Just move closer to the source through his words and through his people.