3 You are already clean because of the word which I have spoken to you. John 15:3 (NASB)
In this passage, Christ is offering us a remedy for the poison of arrogance, which is overestimating your own holiness. Jesus says this so none of us will think that our own suffering, apart from Christ, can attain forgiveness of our sins or make us fruitful branches in the sight of God. Here’s what usually happens: Someone does many good works and endures much suffering….
That person becomes aware of producing fruit. In other words, they are aware of achieving something through preaching or some other method. Then that sweet poison begins to make the person think, “Oh, I have now done something that will make God notice me and be merciful to me.” In this way, little wild branches begin growing alongside the true branches. These wild branches steal the sap and energy from the true branches so that they don’t flourish. That is why the Gardener must be alert. He has to restrain such arrogance and presumption by constant application of the Word.