Jesus said He had to leave for the benefit of His followers, so the Comforter could come…. Jesus knew we would depend on seeing Him with our own eyes, on having His physical Presence, as long as we could. We could never mature in the Spirit while depending on our physical senses. His Immortality could not continue to manifest, feeding our physical senses in the physical realm, and sustain freewill for mankind’s continued existence in the physical.
Faith is the fulfilled desire to see beyond the physical that is rewarded with the gift of The Unseen that gives us spiritual vision to see more than the physical existence alone. And when the physical body ceases its labor, we are already fully present in the spiritual realm.