“That which is not lived is not redeemed.”
This implies that humans do not further grow and develop after 33. Jesus was killed just as he enters his productive years. He does not live the experience of later years. Thus by this logic humanity is not fully redeemed because we most certainly do grow and change right through to our final days. The golden years of quiet wisdom are not known to Jesus, along with many other experiences like declining health.
Christianity must be considered incomplete. This should not disturb the seeker, but inspire him. Only one who is closed will be disturbed, and hopefully broken free once again.
