Every one that beareth fruit, he purifieth — by obeying the truth, 1 Peter 1:22; and by inward or outward sufferings, Hebrews 12:10-11. So purity and fruitfulness help each other. That it may bear more fruit — For this is one of the noblest rewards God can bestow on former acts of obedience, to make us yet more holy, and fit for farther and more eminent service.
Related Commentaries of John 15:2
John 15:2
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.