John 15:2, 4, 8

Every branch in Me that does not bear fruit, He takes away; and every branch that bears fruit, He prunes it so that it may bear more fruit.

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

My Father is glorified by this, that you bear much fruit, and so prove to be My disciples.