John 15:5

So I tell you, I am like the main trunk of the grape vine, and you are like the branches. If you stay joined to me, I will stay joined to you, and you will keep on doing what God wants you to do. You see, if any branches don’t stay joined to the trunk of the vine, they can’t grow any fruit. Just like that, if you are not joined to me, you can’t do anything for God.