John 15:2, 4, 8

He cuts off every branch of mine that doesn’t produce fruit, and he prunes the branches that do bear fruit so they will produce even more.

Remain in me, and I will remain in you. For a branch cannot produce fruit if it is severed from the vine, and you cannot be fruitful unless you remain in me.

When you produce much fruit, you are my true disciples. This brings great glory to my Father.