John 15:3-5

Revised Standard Version Catholic Edition

³ You are already made clean by the word which I have spoken to you. ⁴ Abide in me, and I in you. As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me. ⁵ I am the vine, you are the branches. He who abides in me, and I in him, he it is that bears much fruit, for apart from me you can do nothing.