John 14:17
This is the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him. But you know him, because he abides with you and will be in you — the Paraclete is identified as the Spirit of truth, the one who leads into all truth and reveals the reality of God. The world cannot receive this Spirit because worldliness is fundamentally blind, unable to perceive transcendent reality; the world's perceptual apparatus is closed to truth. Yet the disciples already know the Spirit through Jesus' presence with them (abides with you—present tense) and will come to know him more deeply when the Spirit will be "in" them (future tense). The trajectory moves from external presence to internal indwelling.