Aware that his disciples were grumbling about this, Jesus said to them, “Does this offend you? Then what if you see the Son of Man ascend to where he was before! The Spirit gives life; the flesh counts for nothing. The words I have spoken to you—they are full of the Spirit and life.
How different are the spiritual life and the physical life! I suppose that for the majority of people in Britain, 'spiritual' has connotations of crystals and lay-lines. So much has the Devil taken over and corrupted Biblical language! The true spiritual life is about communication with God through God, the Holy Spirit. This is the only true life; the rest is just animal existence. For the Christian this (eternal) life has already begun and will continue after physical death.
When we are caught up with hustle and bustle of physical life - families, career, entertainment - it is hard to focus on the spiritual dimension. That is why we need our quiet times. For an eternity to come it will be nothing but a spiritual life. Hallelujah! No distractions. No wickedness. No tears. No disputes. All will be clear.