John 15:2-4

2 Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit.

3 Now ye are clean through the word which I have spoken unto you.

4 Abide in me, and I in you. As the branch cannot* bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me.