Speaking to His disciples about His path and ministry, Jesus mentions a “Comforter” whom the Father will send them and whom, Jesus Himself says, the world can neither see nor know (vv. 16-17). This “Comforter,” whom Jesus also calls the “Holy Spirit” (v. 26) and the “Spirit of truth” (v. 17), will in due course remind the apostles of everything they are now hearing from their Teacher (vv. 25-26). The mention of God's spirit, or breath—the corresponding Greek word, like its Hebrew equivalent, can mean either—in the context of an account of the Kingdom is, of course, no accident. The Old Testament prophets were the first to speak of God's spirit, or breath. For them the spirit was not an abstract theological or philosophical concept but part of a living experience of communion with God; they truly felt God breathing in their hearts.
But Jesus apparently means something more. He speaks of the spirit as a reality on a universal, cosmic scale that nevertheless remains hidden from the world, for this reality belongs to a different order than our still untransformed world. The breath of God unites everyone who abides in the Kingdom, making them one whole: the Father, Jesus Himself, the apostles, and all who will enter the Kingdom through their prayers and under the influence of their preaching. In the past, only certain people felt God's breath at special, exceptional moments in their lives; now it is revealed to everyone who abides in the Kingdom. And no wonder: God's breath permeates the Kingdom, gives it life, and gives it the power to affect the world by transforming it. Because of this breath there are no distances in the Kingdom; here only the quality of relationships and the intensity of love determine mutual closeness.
Until now, the apostles had seen the Kingdom only because of Jesus: they looked at Him, and through Him God's power was revealed to them. Now they were to enter and see from within what they had previously seen only from outside. The time was coming when Jesus would become invisible to a world capable of seeing only what had not yet been transformed. The apostles themselves would therefore no longer see Him with physical sight; but after entering the Kingdom, they would find Him there, seeing Him no longer with their eyes but with their hearts (vv. 19-20). It is no accident that Jesus speaks of a peace unknown to the untransformed world (v. 27): true peace and harmony are possible only in the Kingdom, permeated by God's breath and joined by bonds of love. Again and again Jesus calls the apostles into this Kingdom so that, having become part of it, they may carry it into the world that so greatly needs transformation and sanctification.
