John 15:4-5

4 "Live in me. Make your home in me just as I do in you. In the same way that a branch can't bear grapes by itself but only by being joined to the vine, you can't bear fruit unless you are joined with me.

5 "I am the Vine, you are the branches. When you're joined with me and I with you, the relation intimate and organic, the harvest is sure to be abundant. Separated, you can't produce a thing.