Spiritual Food is Necessary for Spiritual Survival.

The same principle as "Man cannot live by bread alone"...

We cannot just concentrate on the temporal, material element of our lives without nourishing ourselves spiritually. If we don't balance our lives and and look after our emotional and spiritual selves as well as the physical and material then we become hollowed out , lose our perspective and possibly our judgement.

If we don't take time out to "be still" and nourish our soul we might lose it!