John 15:3-5

Now you are clean, by reason of the word which I have spoken to you.

Abide in me: and I in you. As the branch cannot bear fruit of itself, unless it abide in the vine, so neither can you, unless you abide in me.

I am the vine: you the branches. He that abideth in me, and I in him, the same beareth much fruit: for without me you can do nothing.