"Third, to abide in Christ is to draw from His fullness. It is not enough that I turn from myself in disgust, I must turn to Christ with delight. I must seek His presence; I must be occupied with His excellency; I must commune with Him. It is no longer a question of my sufficiency, my strength, or my anything. It is solely a matter of His sufficiency. The branch is simply a conduit through which flows the fruit-producing juices, which result in the lovely clusters of grapes. Remember that the branch does not produce, but simply bears them! It is the vine which produces, but produces through the branch, by the branch being in the vine. It is not that the believer finds in Christ a place of rest and support, whither he may go in order to produce his own fruit. This is the sad mistake made by those who are ever speaking of their own self-complacency, self glorifying experiences, which shows that their souls are occupied with themselves rather than with Christ. It is of the greatest practical importance to know that Christ is 'all and in all'---not only as our standing before God and our ultimate perfection, but also as to our present life to the glory of the Father."
-A.W. Pink, Exposition of the Gospel of John Volume Three