What does the 'flock' eat?

In the Christian world a minister is often called a 'pastor' referring to a 'shepherd' and the congregation is often called his 'flock.' This is for the reason that the pastor's job is to feed his flock spiritual food. But it's important to remember that in this analogy, what he is feeding them is not food that he has made or prepared, but rather it is straight from the Lord, available to all, as the grass of the fields is to sheep. The pastor's job is simply to lead the flock to where they can find and eat food for themselves; in the pastures of the Lord.