I am the true vine, and my Father is the vine dresser.
All Commentaries on John 15:1 Go To John 15
John Chrysostom
AD 407
And forasmuch as Christ was sufficient for Himself, but His disciples needed the help of the Husbandman, of the vine He says nothing, but adds concerning the branches, Every branch in Me that bears not fruit, He takes away. By fruit is meant life, i.e. that no one can be in Him without good works.
And inasmuch as even the best of men require the work of the husbandman, He adds, And every branch that bears fruit, He purges it, that it may bring forth more fruit. He alludes here to the tribulations and trials which were coming upon them, the effect of which would be to purge, and so to strengthen them. By pruning the branches we make the tree shoot out the more.
You are clean through the word which I have spoken to you, i.e., you have been enlightened by My doctrine, and been delivered from Jewish error.