Exodus 16: 2-4, 12-15
In the desert the Israelites complain about food, and hanker for the fleshpots of Egypt. 

Ephesians 4: 17, 20-24
Beware of aimless living, says St Paul.  Be renewed by a spiritual revolution. 

John 6: 24-35
Do you eat to live or live to eat?  Look for the true bread, Jesus Christ himself.