He would be with them forever, and nothing, even death, could deprive them of the Spirit's presence. He would be the Father's unique gift given to Jesus' disciples, a gift neither seen nor known by the unbelieving world. The disciples would never lack for comfort, strength, courage, wisdom, and peace, for the Spirit of truth would be their constant Comforter, who would be with them forever. Love in the Scriptures is an action, not a feeling. Love is an act of the will, not a state of being.
Love is an action of one toward another.
You love by doing something. We have nothing but sin and death to offer Christ. That's all we have. In return, He gives His perfection and life. That's the blessed exchange that Jesus was hurtling toward His death to accomplish.