I am the vine; you are the branches. The one who remains in Me and I in him produces much fruit, because you can do nothing without Me.
John 15:5 (CSB)
This passage speaks directly to believers. However, contrary to what many believe, the word fruit used in this verse has nothing to do with the act of evangelism aimed at bringing more souls to repentance. The conclusion of the verse clearly proves this: “For without me you can do nothing.” So what does the phrase bear fruit in abundance really mean?
The main idea of the verse refers directly to the life of the believer after his conversion. Is he faithful to the words that Jesus mentioned a the verse above, "If you love me, keep my commandments"? Does he follow Christ’s example in doing good to others? Is he an example of humility? In this sense, I would say that the abundance of fruit is defined rather as the spiritual qualities that the believer develops. You will undoubtedly ask yourself the question, how to develop these qualities?
On the one hand, Jesus answered this question by saying that without Him you can do nothing. Which means that the only way to produce fruit is to remain attached to the vine which is Christ. On the other hand, in Galatians 5:22-23, Paul identifies for us the fruit that we are to bear: "But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law." It is not you who will do the work, but the Holy Spirit within you. Abide in Christ and you will bear fruit.
May the grace and peace of God be with you all.