#without god we can do nothing

The vine had long been a beloved symbol of Israel… in the Last Supper discourse, on the way to Gethsemane, it acquires a new dimension, the pain of pruning. However, the suffering of Jesus is not the principal point here: [rather, it is that all] disciples of Jesus must be prepared to bear the pain of pruning. The image is a powerful one. To an uninstructed onlooker, the wretched, seemingly lifeless twigs left on the vines appear totally unable to burgeon in a few months into the rich harvest of grapes. The most powerful of all the aspects of the symbol is the sap pulsing through those apparently dead branches. There is all the difference in the world between those docked shoots [still thriving within], and the dead twigs scattered on the ground, [their wild growth availing nothing.Humble] adherence to the vine, to Christ himself, alone gives life to the Church.

Dom Henry Wansbrough; Commentary on John 15