Have you ever noticed how often we use food in our spiritual word pictures? The need for food is universally understood, even though the sorts of things we will and will not eat varies wildly. Food, no matter what our preferences, must be consumed if we want to stay alive and healthy.
That is exactly why the Scripture calls Jesus the Bread of Life. In the Old Testament, the Garden of Eden had a tree which provided life-giving fruit. Adam and Eve had to stay close to the tree if they wanted to live. In the New Testament, we learn about a life giving Bread which not only sustains us but also is available wherever we may be. You may be physically present in a land with no Bible, but with Jesus in your heart, you will always be spiritually near His life-giving bread.